LIsa Black
Cape Coral, FL
Female, 49
I spent the five happiest years of my life in a morgue. As a forensic scientist in the Cleveland coroner’s office I analyzed gunshot residue on hands and clothing, hairs, fibers, paint, glass, DNA, blood and many other forms of trace evidence, as well as crime scenes. Now I'm a certified latent print examiner and CSI for a police department in Florida. I also write a series of forensic suspense novels, turning the day job into fiction. My books have been translated into six languages.
That probably depends on the person, but in general I'm sure we like cases best when we can discover or determine useful facts that help in the investigation. It's not much fun to process a pile of evidence or do hours of work that ultimately (as most of it does) doesn't make much difference to determining or proving who did it. Homicides are, of course, the most high-profile but they also seem to arrive at the most inconvenient times and require hours and hours of working without a break. Personally I'm probably a little happier to solve a criminal mischief than anything else, because they're so petty and pointless--just stupid kids with nothing better to do than be wantonly destructive! At least a burglary has a logical goal. A selfish, inconsiderate goal, but a goal.
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Um...no. I've cleared many people but before they were convicted--just routine stuff during the course of an investigation. Of two cold cases that come to mind, in one the guy recanted his confession and eventually won a new trial so I was re-examining evidence, and then just before the new trial he confessed again and went back to jail. Then in the other case, which was quite old, the descendent sued the state for wrongful imprisonment, but the court found that the state had not acted wrongly and still had every reason to think the guy was guilty and no reason to think he wasn't, so that didn't really change anything, either. Unfortunately many of the other cold cases I've worked on are still cold.
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Oh, where to begin, there are so many.
Okay, #1 biggest: We do not really have a BatComputer! Do you remember the episode where they poured in alphabet soup and it spelled out a message? Real scientific instrumentation does not work that way. We don't have a machine that can accept any type of animal, vegetable, or mineral and tell you exactly what you want to know about it. Instruments might analyze organic material or inorganic material or, like my infrared spectrometer, inorganics but only within certain parameters. For example my atomic absorption spectrophotometer was set up to detect barium, antimony and lead on shooter's hand swabs. The hand could be covered in arsenic and I wouldn't have any way to tell. Materials can be run against a database of similar materials, yes, but databases exist because some lab tech went around rounding up samples of nail polish and created their own. There is no national database of perfume or wall paint or cat food--and even if there was, those items change formula every couple of months. So even if I can easily determine that this fiber is, say, nylon 6,6, there is no database that's going to tell me that it comes from a Halston sweater sold only by Macy's and this is how many they sold in this area and this is who they sold them to and, oh, here's a driver's license photo. Companies do not publish their formulas and stores do not hand out their sales figures (and we certainly cannot 'hack in' and get them). That would most likely be violating SEC and civil liberty laws. Okay, enough of that rant.
#2: Someone like me in Smalltown, Anystate, cannot scan in a latent fingerprint (from a crime scene) and search everyone who has ever been fingerprinted in the entire United States including job applicants and military. Most databases are local, maybe statewide depending on where you are and your software. I can search people arrested in my town, and have been receiving those from the county for a number of years. I do not have access to job applicants, not even our own, and certainly not military. That said, I estimate that in five to ten years I will be able to electronically submit a limited number of latent prints to the FBI's national database, but certainly not yet and certainly not for the past 50 years, as TV shows would have you believe.
Those are the two biggest. Oh, and we very rarely package evidence in plastic, we don't wear skin-tight, designer clothes and high heels to crime scenes (when you work around blood, bleach, dirt and decomp fluid you never wear anything that you'd be upset about if it got ruined), we don't interview suspects or tell the cops who to arrest, and we're not all young, single, sexy and angst-ridden. We're really very ordinary. Though I understand that doesn't make for the most captivating TV character.
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The best surfaces for fingerprints are smooth and glossy: clean glass, porcelain, polished marble. It goes downhill from there. The rougher and more porous a surface is, the less chance of finding prints on it. Also if the surface is smooth but if it's covered with dirt or dust--someone who touches it takes away dust instead of leaving a print. Then people's fingers vary greatly in how much sweat and oil will be on the ridges at any given moment--if they're recently washed, if they have dry skin, there will be less chance of leaving prints. Then the environment the object is in--if it's a cool, protected place with steady temperature and humidity, prints can last for years. If it's exposed to light and heat and varying conditions, a print might not last very long at all. Fingerprints are subject to so many variables that we never make an assumption about whether we'll find them or not.
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Chick-fil-A General Manager
How often do you have to fire someone, and does it ever get ugly?
Emergency Room Manager
What's the best time to arrive at an ER to avoid waits?
CPR Trainer
Is it possible to perform CPR on animals?
No, I wouldn't say so. I never use a lot of what I learned in biology on the job. It depends much more on where the degree is from, how many years it took, and how much practical experience in crime scene and lab work was included in the curriculum. You might want to call the crime labs you'd want to work at and ask what kind of degrees their employes have.
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Most people do not leave notes so the absence of a note doesn't really affect things.
Was there any sign of a struggle or forced entry? Is the blood spatter consistent with the position of the body (bearing in mind the injuries--it is possible for people to shoot themselves in the and then be moving around afterwards, it all depends on the power and location of the shot)? Is the injury consistent with a self-inflicted wound (angle, distance). Is there a history of previous attempts, depression or problems?
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I'm not into the macabre (I don't have skull earrings and I don't watch zombie movies...unless Shaun of the Dead counts because I love Simon Pegg) (nothing against zombie movies, just don't seem to catch them) and the only thing I appreciate about the dead is that they're quiet and they don't give me a hard time. I've always been into detecting, is the thing. The problem is I wanted to be a detective like Ellery Queen, work my own hours and then just call everyone into the library once I've figured it out. But I never wanted to be a cop and have to deal with stressed-out people, so being a detective was never really an option. A CSI is just unusual enough to be interesting but just routine enough to keep my inner homebody/bookworm/wallflower self comfortable.
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This is certainly possible, but would be a very iffy way to frame someone. First you have to talk this other person into cooperating while you make a mold of their finger. THen you can use some epoxy based putty to cast the finger. Provided this goes well the pattern should be an exact duplicate, so that's good. Now you have to coat that with something to form a fingerprint. Don't use your own sweat and oils in case we do touch DNA on the print. On CSI they used cooking oil spray, which might work but depending on how long or short it is until the print is processed, it might be too soft and just smear when the tech powders it. Then you have to put this cast finger to a piece or pieces of evidence that you are SURE the crime scene tech will print. This is where it gets tricky. Say you stage a break-in and you put it on the window frame or broken glass. Maybe the frame is too rough to hold a decent print, maybe the tech fingerprints 15 pieces of broken glass and then gives up. Maybe you take great pains to put it on the murder weapon and then a traumatized witness or a clumsy tech smudges the print when they pick it up. Maybe you leave it on a note in the victim's pocket (paper is also very iffy!) and then EMS cuts the shirt off and leaves it in the driveway or throws it out in the ER or it gets soaked in blood. THEN when the tech lifts the print, it needs to look consistent with the 'background' from the item and the manner in which it was gripped. Of course if the rubber flakes off into the print that might get more attention than you want. THEN if we decide to do DNA analysis on the print (which is possible even after it's been processed with powder or superglue) the DNA results might be utterly negative or show animal strains (?) or whatever. Again, that might raise a red flag with an analyst, or they might simply figure that there wasn't enough sample to get a profile. So you MIGHT get away with it. Or you might not.
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I actually haven't done DNA analysis in a lot of years, and that was before STRs (the method mostly used now) but from what I pick up from the analysts, yes, it's not like TV where you wait in the hall for your DNA results. It's a time consuming process and at certain points there's no way to do it quickly. First they have to determine if DNA is present. Then they have to estimate about how much is present, to know if they need to 'amplify' the same or not or how much. Then the actual testing is done. During all this they also need to run positive and negative controls and do other quality control measures. There's also paperwork, lunch breaks and I doubt too many labs operate round the clock. Then of course there's first-in, first-out; your case doesn't get to jump the line, so how long it takes depends on how long that line is. At our state lab it used to be close to a year, but things have gotten much better and now it's more like weeks to months. If we want something more quickly, we can send it to a private lab which can promise us a one-week turnaround--for $1800 PER sample. But even disregarding queues and monetary considerations, even if the lab dropped everything else and worked overtime, it would still take a couple days.
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We had a person borrow money from a kind elderly gentleman, then ask for more and beat him to death when he refused. The person then went home and mailed the victim a check, trying to show that the debt was being paid and there was no ill will. That's what passes for extreme cleverness in my neck of the woods.
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Every part of a fingerprint is unique to the person. Whether the latent print has sufficient information to identify it to a person depends on its clarity and volume and the experience of the examiner. There's usually more activity around the center of the finger pad than at the edges or the tip, for example. But exactly how much of what type of information an examiner needs to make an identification--unfortunately there's no simple answer for that. Fingerprints aren't like DNA, there's no handy table of X allele plus Y allele times population data, so there's no neat way to quantify it. On this topic, my pet peeve: When characters on TV say "It's just a partial." Unless your perpetrator stood at the crime scene and rolled his fingertip over something, from one edge of the nail to the other, then EVERY latent print is a partial!
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No, I have not. I don't really have any favorites about forensic anatomy in particular, though I borrow Postmortem by Koehler & Wecht from my co-worker often. I also liked the books by Dr. Michael Baden and Dr. Thomas Noguchi. My favorite forensics book is probably Colin Beavan's Fingerprints.
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I actually do not know that, sorry. I attend autopsies but only to observe, so I don't have anything to do with that--but I can tell you that the organs (except eyes or bones) are all dissected and examined so they would definitely be no longer transplantable. So organ harvesting is done before the autopsy.
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I had seen dead bodies at funerals, of course, but other than that the first time was at an autopsy. It was strange because it was one of the rare cases in which the victim practically looked like he was sleeping. Almost always a dead person LOOKS dead, you can tell at a glance (something they rarely perfect on TV). But in this case it was a young man who had simply slipped on icy steps and hit the back of his head, so that was very sad too, to think that life could be lost so easily. Otherwise the autopsy isn't that horrible--there's no gushing blood, for instance, because the heart isn't pumping. It's the smell that gets you more than anything--it's not (most of the time) so much bad as strange. I think our bodies know more than our minds at that point and they know something is wrong. So the answer is I felt a little sick, but didn't actually get sick. We'd have lots of classes (police academy, nursing students) come through the coroner's office and while many would get a little queasy and have to go sit down, we rarely had anyone actually either throw up or pass out.
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That's a tough one. I've had cops put tools back into pry marks to show that they fit and unload weapons to make them 'safe' (which is an okay idea under certain circumstances, but usually not). I did something really stupid just a few days ago--after we had painstakingly located some spent casings in thick grass, I put a marker down, took a picture, then took the marker and went back to my car to get an envelope for the casings. Doh! Luckily another CSI standing there hadn't taken her eyes off them. A good 15 years ago at my lab an old-school trace evidence person took the shorts from a decomposed body and washed them in order to read the tag info...I remember the look of horror on the cops' faces when I had to tell them that all the hair and fiber and other trace evidence had been washed down the drain. Happily it didn't matter, the victim's boyfriend was convicted anyway.
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From a fingerprint, no. From DNA, not age but they can probably make estimates that the sample likely belongs to a particular racial profile. They can also look for markers from the Y chromosome to determine gender. However I don't know if they necessarily see all these loci in every analysis. Usually in DNA testing you have samples from the crime scene, the victim and the suspect, and we want to know if this sample matches either the victim or the suspect, period. So they most likely don't test for the other factors unless requested. But I am not a DNA analyst so I could be wrong--they could be able to tell all sorts of things that they don't put in the reports because it's not relevent to our particular case.
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I honestly have no idea, and suspect it would depend on where you are applying--whatever the hiring agency's policies are. I'll ask my boss and get back to you.
OKAY! I finally asked my supervisor about this, and unfortunately the news is not too encouraging. If you were found guilty of a felony, you might have a real problem getting a job with a law enforcement agency. But just because the crime was a felony doesn't necessarily mean that was your charge, you could been found guilty of first degree misdemeanor or some lesser charge, and that might not preclude you from employment. Also, smaller agencies might be willing to waive this exclusion especially with military experience. And this is only in the event that you were convicted. If you were simply charged with the crime but not convicted, then most likely it isn't a problem at all. The only way to know for sure is to ask a few of the places you'd be interested in working at and see what they say.
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Again, titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or whereever you might be interested in working and ask them. At the coroner's office we had to have at least a bachelor's in a natural science (this was before they had forensic science majors). At the police department where I am now, they only require a high school diploma but you get more points in the interviewing process for having a four year degree, so we all have one. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. Good luck.
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It depends on how you define 'perfect'...if I can't tell the perpetrator has even been there then we wouldn't even know a crime has occurred, so I wouldn't know it was a perfect crime. If you mean 'perfect' in that the guy didn't leave any DNA or fingerprints that we found, sure, all the time. I've had plenty of burglaries in which it was apparent that a burglary occurred, but between humidity and surface conditions and what the perp had to touch in order to get the job done, I find no fingerprints at all (not even the people who live there). If you walk up and shoot someone (especially with a revolver, so no dropped casings) and walk away, you're not going to leave anything. Maybe a hair or a skin cell, but how would a CSI find that on a dirty street? Hence, a 'perfect' crime. Unless you get a parking ticket on the next block or a witness waiting for a pizza delivery happens to look out their window or there's an ATM camera you didn't know about.
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The skin cells sloughed off and left in a fingerprint contain DNA, but there's no guarantee that there will be a sufficient amount to obtain a DNA profile so it's a risk to go straight to DNA testing instead of developing the fingerprint. Besides, identical twins will have the same DNA but different fingerprints.
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I'm sorry but you'd really have to ask a pathologist, this is not my area. I imagine it would depend a lot on the individual situation--the environment, temperature, humidity. Insect activity can be pretty accurate. But I believe that pinpointing to a few hours after someone has been dead for weeks only happens on TV.
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I don't consider myself desensitized. I still say "Oh, that's terrible," when I read about someone's death in the paper. I just don't get sick at the sight of bodily fluids. It seems like you either get used to that instantly, or you get into another line of work. It's not exactly the same thing as having a weak stomach--I've known guys who were homicide detectives for 20 years and still had a weak stomach. But when I'm standing at a crime scene there are so many things to think of (plus the overriding "Don't screw up!") that I don't have time to think about how awful this is. To me it would be more nervewracking to be an ER nurse and have someone's life depending on my instant decisions; at a crime scene, the crime has already been committed, so I couldn't have prevented it and I can't do anything about the fact that it happened. I think also that, without putting it into words, I tell myself that the person died right away. I get more upset at seeing the things the hospital did, the tubes, the halo brace, because I know the person must still have been alive for that to be done. Basically, if this work is going to upset you, do something else. It doesn't help anyone to be traumatized by your daily job.
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The way I understand it--and I am NOT a lawyer!--is that technically you don't need permission to get a DNA sample (which is just a cotton swab rubbed on the inside of your cheek, doens't hurt) because the 5th amendment right against self-incrimination only applies to testimonial evidence. You can't be made to speak against yourself, but your fingerprints can be collected whether you like it or not so DNA should be the same. A sample can be collected from a discarded cup or can because garbage is abandoned property and can be taken by anyone. (Of course if you go through their trash cans, you can't prove that your suspect drank from that cup.) I believe it might also be affected by whether the suspect was in custody or not at the time of collection. And it won't help to test an official sample later because if the first sample is excluded from trial, then anything collected as a result of that will be thrown out too (or so I understand from repeated viewings of Law and Order.) That said, at my agency the detectives always get the person to give consent or they get a search warrant from a judge, just so there are no issues when it gets to court. It's not worth the risk of going through all the work to get to court and then having it all thrown out, so I think those tricks are largely used only on TV. I can tell you I've never seen it happen.
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I can try. I'm not an anthropologist, but we do have a field guide here showing the skeletons of many mammals and birds. We used to have a lot of 'found bones' calls at my agency--the area had a great deal of construction going on in the area and the digging would often turn up bones.
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I apologize to your girlfriend on behalf of the law enforcement community. No one should ever be told that their crime is not 'a big enough deal.' Even if the responding person thinks that, and I'm not saying we don't sometimes, you would think they'd have better sense than to say so. Unfortunately you had a lazy cop who didn't want to get his hands dirty--or, truly, that could be an unofficial policy taught to rookies by other lazy cops who don't want to get their hands dirty. OR it could be the policy of the latent prints department who want to limit their caseload so they won't accept cases that had a claim less than X amount of dollars. So it's hard to know where it came from, but it's still wrong. Anyone who's burglarizing a condo is burglarizing plenty of other places as well and it would benefit everyone in town if they were caught. It would only take ten or fifteen minutes to throw some powder on at least the point of entry and any smooth and glossy surfaces the burglar had to have touched (bearing in mind that knocked over is not the same as touched) such as a mirrored medicine cabinet or a glossy lacquered jewelry box. Now if she's positive the perpetrator is her ne'er do well stepson who lives there (so that it is technically not burglary) or she realizes the burglary happened 3 weeks ago and she didn't check her jewelry until now or some such circumstances as that, or if the door had been left standing open and the only item disturbed is fabric-covered so it won't hold prints, I can understand not processing for prints, but they still should explain that. That said, burglaries are my LEAST favorite task at my job, but that's because I'm lazy and hate getting my hands dirty.
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To ever-more sensitive DNA collection and analysis, I believe. The other growing fields will probably be the analysis and utilization of computers, cell phones and video surveillance.
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I don't know, unless the corpse lay in bleach or some other chemical that would react with the bleach in the hair. Dark hair can (I know from personal experience) turn kind of orangy when you try to lighten it. Otherwise hair does not change much either while living or dead.
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Not to sound like a smart aleck, but you're on the payroll of whoever you work for--that can be the police department, the state police lab, the coroner's or medical examiner's office, the county sheriff's department, or an independent lab (usually doing DNA). You can also be a sworn officer or a civilian employee of same. Titles are not uniform. When I was at the coroner's office my title was forensic scientist because that was what the coroner said it was. At the police department I was an evidence specialist and then became a forensic specialist after I completed my training for fingerprint analysis. Your title is whatever your boss says it is.
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Right now I'm working 12 hour shifts, from 6 am to 6 pm, working out to 80 hours over 2 weeks. At the coroner's office I worked 7:30 to 4:30 and 8-12 on every other Saturday. When I started here at the police department we did 7:30-4:30 M-F. Then we went to, on opposite weeks, having one person work 10 am - 9 pm M-Th. Now there are more people so my 'shift partner' works noon to midnight. That way someone needs to be on overtime call only from midnight to 6 am. So in other words the hours will be determined by where you work, how many forensic people you have, how big the agency is and how determined they are to keep overtime to a minimum.
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I can't think of anything that's industry-wide. Errors in assumptions can be made at any time by any body--like, I might assume you aren't going to get DNA off a gun trigger because I never have, while a brand-new person might assume you will get it regardless of any other factors because a textbook said it was possible, and we both might be wrong or right in that particular case but not others. So most errors would be made by assuming something can't be done, either because a tech or officer never had any luck with it or because they aren't up with the latest information, which will happen anywhere because no one can keep up with anything. As for study, the only thing holding that back is what's always been holding it back--time and money. Most of us can barely keep up with our caseload, much less take on a research project, and most government budgets have been battered down to sustenence level. It's getting better as the economy improves, and there are major research projects underway through the various forensic organizations, FBI and NIJ.
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Unfortunately, same answer as above--you really need a pathologist to answer that. But I will ask the M.E. investigator when she gets back to me on the BAC question!
Okay, she said:
Welllllll….. that one’s trickier. Drowning is often a ‘diagnosis of exclusion’ so you may NEVER see evidence of drowning, even moments after death (although we look for foam in the airway and fluid in the sinuses to corroborate investigation findings). The mere process of burial could potentially destroy any pertinent evidence that would exist in a drowning, even if decomp hasn’t begun by the time the body is “dug up”. Now in a child, we’d look for petechiae, bruises (that you can only see by removing the skin), torn frenulam, etc.…
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That's a tough one, because unlike television I don't take it personally whether the case is resolved or not. Again unlike TV, I'm not in charge of the case, the detective is. I'm just a cog. I also don't deal with family or witnesses so I'm sort of emotionally once-removed from the trauma. So the most frustrating cases are those in which I can't find anything that helps. Say the victim and the suspect live in the same house so that any fingerprints or DNA of the suspect is to be expected and doesn't prove anything. Or we have no suspects and fingerprints and DNA at the scene don't match anyone in our system so that's not helping either. So then the most satisfying cases are those in which I find and analyze a piece of evidence that can tell us with certainty who was present or what occurred where. But either way I don't take it personally. I can't control what's there, only what I do with it. Sometimes you're lucky and sometimes you're not.
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Absolutely! Even better if you could pair it with some coursework in forensics or maybe an internship.
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Let me get this straight--so Alex frames Bert by shooting himself (Alex) in Bert's house with Bert's gun? Kind of a drastic way to get back at someone, but certainly possible. Yes, initially it would not look good for Bert at all. However--and this is always the problem with trying to frame someone--what is Bert doing while this is happening? Alex can't be sure that Bert won't be getting a traffic ticket or stuck in an all-day meeting and therefore have an unbreakable alibi? The gun and the condition of the wound would have to be consistent with suicide (unless you do some Agatha Christie rubber-band type of arrangement) but that would not make it impossible for it to be homicide. Alex's fingerprints might be on the gun but that wouldn't rule out a murder (and it's so rare to get a fingerprint off a gun that he might decide not to worry about it). Please don't have Bert, upon discovery of the body, engage in the time honored but still silly tradition of picking up the murder weapon and then saying "I have no idea why I did that..." Human beings have an instinctive revulsion against touching anything associated with a dead body.
Does a neighbor see Alex enter Bert's house when Bert's not home? Is there any sign of forced entry? In other words, forensically there may not be much to say one way or the other--and that's very often true. Forensics will establish facts, but those facts might not be helpful. Forensically we can say Alex died of a gunshot wound from this gun, has gunshot residue on his hands (not suprising since he was in close proximity to a gunshot) and has no other wounds to indicate a struggle. That's about it. Deciding whether it's suicide or murder would likely spring from more traditional investigations--what was Alex doing there, did he know where the gun is, where was Bert, did Bert have a history of violence, did Alex have a history of mental instability, etc. etc.
I hope that helps!
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I do not know! So I asked the local M. E. investigator, who said:
It would be .26….
If this is liver, then I presume you’re talking about a decomp… and if you’re talking about a decomp, then keep in mind that the process of decomposition will raise the ethanol level in the body anyway so some physicians don’t even consider liver tissue entirely accurate when looking at alcohol.
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I have a bachelor's in biology from Cleveland State University in Cleveland, Ohio.
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If you see the two Q&As above, you can't go wrong with science classes. When I was in college they didn't have courses specifically in forensic science, so that wasn't an option. And different agencies will have different requirements, so you might want to go online and check out the different vacancies to get some idea of what requirements are out there.
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That depends on a lot of factors. In Cleveland I went to court a lot more often because--since it was a coroner's office--practically every case was a homicide and many went to trial. In Florida at the police department we have few homicides and a lot of burglaries and such, the types of crimes that tend to get pled out or dismissed. So I might go to court twice in one week and then not again for three months. And yes, the popularity of crime dramas has definitely made things more difficult because a jury expects to be 'wowed' with cool science in each and every case, and sometimes that just isn't there. It's not a bad thing that there's increased scrutiny on forensic testimony, of course, only that expectations can be unrealistic--in both directions. It can harm the prosecution's case if the jury expects DNA evidence in, say, a robbery case where someone walked in and walked out and didn't leave any DNA, and it can harm a defense's case if the jury has such faith in science that that evidence is all they give weight to. (Excuse the clunky grammar please.)
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I would say 'touch DNA', which means get a DNA sample from the sweat, oils, and amino acids left by simply touching something. We now routinely collect swabs from steering wheels, gun triggers and tool handles. That doesn't mean they always have sufficient DNA to do anything with, but surprisingly often they do.
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I loved mysteries but didn't want to be a cop. I don't really want to deal with people under stress on a daily basis. This job has enough variety to be interesting but enough routine to keep the homebody in me comfortable.
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You can't go wrong with as much biology and chemistry as you can get, plus some physics and math.
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I don't know what you mean by 6 or 12, but I asked a former co-worker who used to analyze glass in an ICP (inductively coupled plasma) and he said the current state of the art for glass analysis is LA-ICP-MS (LA = laser ablation). This uses a laser to vaporize a small amount of sample and then runs it through both an ICP and a mass spec. (only about $300,000). I'm sure a small amount is a very small chip or sliver. I know when I did glass analysis on an old hot stage we only needed a tiny chip. He also said you should contact Florida International University because it is "the epicenter of glass analysis".
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Any science major is a good thing. The requirements for each lab vary, so if you have a particular location in which you wish to work, you might call all your potential employers and ask what the job requirements are. Then you can decide whether a science degree, a forensic science degree, a masters or a PhD would be best. Also check salaries and decide whether they are sufficient, and be prepared for a lot of competition.
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Not necessarily. I've never been a cop and neither have most of my co-workers. It completely depends on the agency you apply to--some require their CSIs to be sworn officers and some don't.
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I don't know, but I would guess that it would be similar to any other profession--if you suffer because of their bias or incompetence or even over-eagerness, then you can ask for damages. The way I understand it--and I am not a lawyer--if your doctor says you have a cold and you actually have bronchitis and he gives you antibiotics and you get better, you don't have much of a case. If you tell him you're allergic to penicillin and he gives it to you anyway and you go into a coma, then you do.
So if an investigator doesn't like you and focuses the investigation on you while the real killer gets away, they may get a bad evaluation at work but it's doubtful that anyone could say they would absolutely have caught the real killer if they hadn't been distracted by you. So I doubt the family of the victim could bring civil charges. If your life has been affected,you lost your job, your spouse, neighbors egged your house, then you could probably sue the department for harassment. Every type of investigator has someone they answer to--a boss, a review board, a licensing board, an appeals court. A conviction could be overturned or vacated altogether.
If they focused on you but you really did do it, then you probably don't have a case, even if they only found you because they don't like you.
I'm guessing--and again this is an only-slightly-educated guess--that the deciding factor is how much their bias affected anything that occurred, overall.
And if by 'examiners' you meant medical examiners, specifically, then I would think the opportunity to affect the ultimate outcome would be even more dilute. An autopsy is photographed and witnessed by assistants and often (in homicides) law enforcement. Everything they put in their report can usually be double-checked after the fact. The extent to which they could skew results would be very limited. This is not to say medical examiner's can't be biased--supposedly Dr. Gerber (along with the local paper) biased the Cleveland jury pool against Dr. Sam Sheppard, but that didn't change anything about his testimony or the results of the autopsy. It did get the suspect a new trial, and did bring changes in the laws regarding pre-trial publicity.
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Yes. We would probably use ninhydrin or DFO to treat the wrapping.
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As far as I know, 1) possibly and 2) yes. Since the area hasn't been specifically and thoroughly cleaned, yes it could still be picked up. And the DNA results should either be reliable or you wouldn't get any results at all. You wouldn't get results that look like someone else's DNA.
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I'm sure DNA analysts could determine male from female if we wished. Y-STR testing is used often when there's a mixture of male and female cells, because of course only male would have a Y chromosome. But I really couldn't give you details; I haven't done DNA testing in about 17 years. The two outside labs my agency has used in the past are: http://www.dnacenter.com and http://dnalabsinternational.com. Hope that helps!
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The A and B's are antigens on the surface of the blood cells. There are other antigens (like Rh) but the A & B's are the most important. Why, I couldn't tell you.
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Every county has only one medical examiner (or coroner). The other people doing autopsies are pathologists. They are all (almost always) doctors. So as long as you're okay with completing med school and then whatever residencies are required, it's never too late to change your life!
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Wow, that's a really specific question. The answer is: you never know until you try. I don't have a lot of luck with plastic bags but my newer co-workers, who have a little more patience with fluorescent dyes than I do, often get good results. It doesn't matter to the fingerprint whether the purse was unattended or not and it doesn't matter how many people handled it, it matters how they handled it. As long as they picked it up by its very edge, they wouldn't harm anything. So it's perfectly possible to get a decent print off it, but I also would not be at all surprised if I didn't because, as I said, plastic bags are very hit-or-miss. Retrieving fingerprints is largely a matter of luck. That's why we never say never.
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Well, time and a moist environment definitely don't help, but I'm afraid that's a question for a pathologist. Sorry I can't be more help.
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I'm sorry, I have absolutely no idea what that is.
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See the first Q&A about fingerprints for more info, but purses (fabric, vinyl, leather) are not good surfaces for prints so you might be out of luck. Is there anything on or in the purse that they had to have touched (not just knuckled or pushed aside, actually gripped) that is smooth and glossy? And that hasn't been touched a number of times since? That might be a possibility.
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I'm sure I did. I actually don't have a good sense of smell, so it probably did get into my clothes and hair more than I realized. You keep smelling it yourself because it gets stuck on your nose hairs (according to popular wisdom) so a whiff comes back to you for a few hours afterward.
ME and Coroner's autopsy rooms are very clean, but that is not the same as being sterile. Except for items used to collect samples for DNA analysis, sterility is not really such a factor--you can't infect the patient. They do take steps to keep from infecting the staff, of course. No food or drinks in the autopsy room, using 'clean' pens and 'dirty' pens, gloves and aprons. I've never heard of anyone catching any loathsome diseases from working there.
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Stay in school and take lots of science courses.
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Sorry--I answered this one earlier, I don't know why it didn't post. Anyway, I don't think it has changed anything about how we do things (assuming everyone was doing them properly in the first place). All it has done is increase the amount of paperwork that comes along with doing them. Which is a tedious thing, but not a bad thing.
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Again--pathologist's area of expertise, not mine. The foreign DNA should be simple enough to obtain but as for pre- or post-mortem...I would guess they might figure it out if there was tearing or damage that seemed post-mortem (no bleeding or bruising). Otherwise, I don't know. Sorry!
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Please don't let your child surf the net unattended.
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I don't see why not. I have a friend who has dyslxyia and he became a schoolteacher.
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Wow, that's another really specific one...I don't see a way to tell whether the stain would be the same size, that would depend on time elapsed, intervening activity and personal habits. There is definitely a way to separate male from female cells however, so yes DNA analysis would identify both parties.
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I'm sorry, I don't know what betc science is.
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They may ask if you've ever stolen from an employer, if you've taken illegal drugs, and if you've ever betrayed someone's trust. Answers have to be 'yes' or 'no' but they may let you explain. Just tell the truth and don't worry about it, it's perfectly normal to be nervous. And if they say some answers came up 'deceptive' you can dispute the point. During my polygraph, the blood pressure cuff was so tight it felt like it was cutting off my arm, so towards the middle I was in so much pain I think that affected the results. Then it began to go numb and the pain eased so there was a difference in the reading. So if you disagree with the results, go ahead and say so.
They'll let you know if they're going to contact family or friends.
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No, I have a BS in Biology, though one of my co-workers has a Master's in Forensic Science. PhDs are often hired for DNA work but yes, probably not for the average forensic position just because they would probably want a higher salary.
And yes, I knew a number of forensic chemists at the coroner's office because they would analyze the blood, urine and gastric on all deceased. They had BS's in chemistry. I don't know if they have forensic chemistry majors now, but they didn't then. At other labs chemists do all the drug testing on suspected substances.
Hope that helps!
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That depends a great deal on temperature and humidity. Assuming it's a good print in the first place, plenty of sweat and oils on the skin and a nice non-porous surface like glass or marble--then if the temperature is a bit on the coolish side with a little bit of humidity but not too much and above all steady, then the print can last for years.
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Sorry--I posted an answer to this but somehow it's not here now so...I'll answer again. This is really a question for a pathologist. I can tell you that there is a huge difference between bodies that are exposed and bodies or even parts of bodies that are not, so the pathogist may be able to tell that it was exposed first. Whether larvae would still be alive probably depends on temperature and how deeply the body had been buried.
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See above answer.
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You'd really have to ask a pathologist or osteopath but I would very much doubt it--even at points where the bone is close to the skin (like the back of the hand) the skin would still provide too much cushioning. It would leave a bruise in the shape of the ring but probably not clear enough to be legible.
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It depends on what the course is about, and the syllabus or course handbook should give a good description. I'm sure the teacher or professor is available for you to ask for more details. Good luck!
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I don't think it would hurt your chances as a forensic scientist any more than it would hurt your chances in any other profession, if a potential employer would be concerned that you might leave in a couple years. Almost all agencies are singular--I mean my city police department is just my city, and the state police is just our state--so there couldn't really be 'transfers' from one agency to another. It might be possible at a federal agency like the FBI, but that would be for agents--their forensic personnel are all contained in one or two places, so far as I know. Your best bet would be to talk to people who have the specific job you want, and ask them.
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Sure, mine. Well, not DNA--I believe DNA is done by specialists who are kept busy enough that they don't have other duties. If your lab doesn't have enough personnel or casework for DNA then it would be sent to another lab. But otherwise, how general or specialized your casework is depends on the size of the agency/lab. If it's small, you do everything. If you have lots of personnel, they can specialize.
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I have not, but I would love to.
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I had a bachelor's degree in biology when I applied to the coroner's office in 1998. They required a degree in one of the natural sciences, and there were no forensic science degrees back then. Only you can decide what you want to go to graduate school for, but as for career requirements you might look at the American Academy of Forensic Science and the International Association for Identification and look at their job vacancy postings to see what they require. As for other degrees with a bio major, there are many private labs for DNA, drug testing, paternity testing, water and food standards analysis, etc. as well as hospital labs that might require. Again, look at job vacancy postings in all these areas--they should be easily found online and they should state the educational requirements. It will also let you see in what areas more jobs are available.
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Use 2 clean cotton swabs--try using just the swabs first, and if the drops just flake off, then you can moisten the swab with (preferably sterile) water. Or do it first thing in the morning when the window is damp with dew. Put the swabs in a clean envelope or small box, something NOT air tight.
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Sorry, I didn't realize the first time you weren't talking about DNA. I couldn't begin to guess what the holdup is. This sounds like they need a crime scene reconstruction, which would take all the available information to try to reconstruct the sequence of the crime. If the case gets passed to experts in different fields (ballistics, DNA, etc.) then it could take quite some time, and I have no idea how backed up the average good reconstructionist might be. I'm sorry I can't help. The DA or the cops would have to actually talk to the forensic person and ask.
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I'm afraid I don't have any idea. I've never met one, only forensic anthropologists. At the coroner's office our forensic anthropologist was a professor at Kent State and would come up and give a report on our skeletal remains when requested.
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Again, I don't like the stress of people asking for the impossible, then assuming you aren't delivering it because you're lazy. There are tons of cases I worked, especially at the coroner's office, where I never found out what happened--unless I'm called to testify in the trial, I have no idea if the killer was ever caught or if the case remains unsolved. The cops would tell me if I asked, but I forget to ask because by then there's new cases. There are fingerprint hits I've made where the person wasn't arrested, and I don't know if it's because the person had a good reason to be in the home, or if the prosecutor got cold feet, or whatever. I could probably find out if I tracked down the detective in charge and reminded them of the exact case, etc., but who has that kind of time? Then there are other cases that I do so much work on, go through a trial, and I know everything about them.
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I have no idea. If a piece of glass is shot or hit with something, most of the glass should move in the direction of the force with some flying back toward the source. But I would think the entire piece is vibrating with a slammed door, so I really have no idea.
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Clothing is kind of interesting because there's so much variety to it and it can give you a lot of information, with blood, gunshot residue and holes made by weapons. I also enjoyed working with fibers because there is a lot of variety to them as well, and they're colorful, but often I'd have way too many and then it would get tedious. No one examines fibers any more, they're not unique enough.
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Possibly. Probably unlikely, but possibly. We would use Small Particle Reagent on a wet car as soon as it was removed from the lake.
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As far as I know, it doesn't. As long as YOU weren't convicted of a felony.
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Repeat, see above.
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How many shots and do they exit the body?
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How long it takes to get DNA results depends entirely on where you are sending them and how backed up they are. Our state lab used to take at least 6 months, but things have improved and now it is only a few months. However if we have a homicide that really needs quicker answers, sometimes they can do that. If the police department or state attorney's office are willing to pay (probably at least a grand. sometimes per sample) the samples can be sent to a private lab that can get results in as little as three days. It's expensive, but it also has to be a lab that is accredited and that the agencies trust. You can't assume anything from a long wait other than that the lab is backed up. They might have an overwhelming amount of cases, they might not have enough manpower, or they might not be efficiently run. It's impossible to guess.
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I am so sorry for your loss. I'm afraid I have no idea how long it would take to dismember a body. That would probably depend upon the extent of the dismemberment and the tools used.
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Yes, about 60 times, and I may be going again this week. It's one of those 'doesn't rain but pours' kind of things. I might go twice in one week and then not again for months. It's incredibly frustrating, time-consuming, nerve-wracking and super not fun. You have no control over anything, not when you have to be there, not how long you have to be on the stand, not what kind of questions you'll be asked, and you get no warning of any of these things beforehand.
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That's actually two different issues. Moving a body can be determined by lividity--the blood pools at the lowest points of the body and becomes fixed, so if the lividity is not consistent with the position of the body, you can tell it was moved. I believe a pathologist would be able to see the signs that a body had been frozen (provided of course it hasn't completely decomposed by the time it's discovered) but I couldn't tell you what they are.
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That depends on where you want to work and what kind of work you want to do. If you want to be a DNA analyst, take biology and biochemistry and don't worry so much about general forensics. If you want to work crime scenes, then you might want a forensic sciences program. The best way to know is to call places you might want to work at--say your dream jobs, even if they're in another state--and ask them what they require and what they look for. That's the only way to know for sure.
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I don't see why not. I'm sure a coroner's or medical examiner's would love to have a pathologist trained in excavating buried bodies and crime scenes. However if you want to work as a pathologist but also do archaology work for other agencies or take leaves to work on archaeological digs, you'd have to work for an agency that would be okay with you working as a pathologist part time.
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That's a determination a pathologist is going to make, not me. But they have told me that drowning is sort of a process-of-elimination conclusion, since there may or may not be water in the lungs whether or not the person died of drowning.Sorry I can't be more help!
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School project?
All our jobs vary wildly, so what's easy and hard for me might be completely different for, say, a toxicologist or medicolegal death investigator. For me I would say the easiest is working with fingerprints in the office. It's tedious and time consuming, but not hard. The hardest part is testifying in court, which is inconvenient, nerve-wracking and often insulting on a number of levels.
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I'm sorry, I haven't had any experience with that.
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As I said above, patience, attention to detail, a tolerance for the more tedious parts of the job, and an affinity for science. A strong stomach helps but I knew guys who were homicide detectives for twenty years and still got queasy at the smell of a dead body, so don't let that stop you.
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Take all the science courses you can and any kind of forensic-oriented laboratory courses.
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Just as a guess, it seems to me that molecular biology and sociology are pretty far apart, career-wise. With molecular biology I would expect you to go into DNA or some other kind of specialized analysis--which would be fabulous, but I doubt that you would also be doing crime scenes. My question is, would you like to work mostly in a lab or mostly at crime scenes? If mostly in a lab, then I think you are on the right track. The best way to know is to contact places you would like to work and ask them what their requirements are. Go for a tour if you can. This is also a great way to network and meet people. But most importantly, every agency will have different preferences based on their functions and positions. Best of luck!!
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That's hard to say because I only know what goes on at my particular agency, and cases are solved in all different ways--by fingerprints, by pawning stolen goods, by eyewitness testimony, through the criminal's use of electronic devices. I think more cases are solved today because there have been advances in all areas, because the world has gotten a little smaller and because the general public is more aware of criminal activity.
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Yes, take all the science classes you can and try to visit local labs to see what the job is really like.
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No, because simply from a news article you have no idea of everything that is going on. The officers might not be (should not be) telling reporters everything they know, in order to weed out truthful and untruthful witnesses. They're also not going to tell reporters (and if they did the reporters wouldn't write it) every last little boring tedious detail of everything they do. And information often gets garbled in translation, from crime scene to cops, from cops to the information officer, from the info officer to the press release, from the press release to the news article, from the neighbor looking over their fence and then talking to the reporter. That's just human.
Lots of time the story I get from Dispatch when they first call me turns out to be a totally different thing when I get there.
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I've worked in forensics since 1994. The best part of the job is making a fingerprint 'hit' that tells us who the bad guy is, or working a crime scene and finding or concluding something that helps explain what happened there. The worst part is being stressed by detectives or attorneys who want all the answers right now and don't understand what they're asking for, or testifying in court and having no idea what's going to be thrown at you.
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We have worksheets or notebooks that we use to make notes at the scene, and we have worksheets that we sometimes use in the lab if we want to. Then the 'official' report, which is usually fairly simple, is typed into our computer system so that everyone in the department can view results or print it out for the attorneys. It will outline everything we did and any results obtained.
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I couldn't tell you the exact chemistry, but it reacts with the iron present in hemoglobin to indicate blood. However it also reacts with other oxidizing agents such as copper and horseradish. Unlike what you see on TV, we don't spray luminol and then use a UV light or some such thing. We make the room as dark as possible, spending a lot of time taping material over windows and door cracks and 'ready' lights, then spray the luminol.or Bluestar. It will glow on its own without any additional equipment, and won't last long. It can be photographed but that's a bit of work. It won't stain or harm anything.
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Oh yes, I'm extremely smart. Just kidding! No, you don't have to be some kind of friggin' genius like you see on TV. You just have to be reasonably intelligent, reasonably sensible, reasonably observant, and have a good amount of attention to detail, respect for rules, and patience. It also helps to be pleasant and able to get along with people. Even though most of our victims are dead, the families, witnesses, cops and detectives are very much alive and under a lot of stress.
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I've had two jobs in forensics and didn't have connections to get either. I didn't get a number of jobs because they were already planning to hire someone's brother-in-law, but I eventually got a position. The procedure is whatever the agency requires and they will all be different, so you need to check out the websites of any agency you would like to apply to. They will usually have a clearly defined process for application.
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it is always helpful to know what will give a false positive result. Hemastix will also react with a few other substances, such as vomit for one. That's why it's called a prelimary test and not a confirmatory test. Good job!
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As much or as little as it does in any other profession. At least half if not most forensic techs are female, so it's not that uncommon to have attractive ones. Many moons ago I used to be one, so I know that sometimes it's helpful to have people open doors for you, and sometimes it's a royal pain in the neck.
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Whatever points conclusively to the identity of the perpetrator. That could be a fingerprint or DNA or some personal item they used or their picture on a surveillance video.
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I talked about what the coroner's office was like above. There's great job security if, as in any other field, you do a good job, you're fair and reasonable, you are empathetic to victims and suspects and other co-workers, and you're reliable and steady. People have to be able to depend on you.
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Yes, rain can be extremely damaging, if the evidence is something that can be washed away, like blood, fibers, fingerprints, small bits of anything, even bullet casings. Something permanent like a bullet hole, not so much. It depends on what the evidence is and how hard it rains. A (fresh!) tarp can help unless it's something wet, like blood spatter, that a tarp would smear.
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If you could find out what kind of analyses they do, then be sure to point out your experience with that equipment, that would probably be helpful. They might have a summary online, or detailed in the job description, or if you know anyone who might work with them either at the lab or as a law enforcement officer you could ask them. Know what they mean by chain of custody. Good luck!!
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If you're working with the bodies then you'd probably be a medicolegal death investigator. You might want to check out their organization: http://www.abmdi.org/And this page: http://www.abmdi.org/faqBest of luck!
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That depends on the requirements of the agency you work for. Some will require you to go through the police academy, many won't.
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Wow, that's specific. Unfortunately I can't really tell you--that's more of a pathology question. It takes a lot longer when the body is not exposed to the elements, so I would think at least a few years. I had a buried body that still had quite a bit of flesh after 2 years. I had a body in an attic that was a skeleton where it had been exposed and still had flesh where it had been wrapped in plastic after 3 years. The process will also be affected by temperature, so if the building is not heated then the heating/cooling cycle of the seasons will make it go slightly faster than if it were at a nice consistent A/C setting. Also if the room is very well sealed and the atmosphere is not very humid, the body might turn into a mummy instead of a skeleton.
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Every agency--police departments, M.E. offices, state police--has their own rules and requirements. The best thing to do is check the websites or contact the agencies where you'd like to work and ask them.
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I'm sorry but I have absolutely no idea. We don't have anything like those types of facilities where I work.
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Time of death is not determined as precisely as it is on television, I know, and they often use a number of factors to make an estimate such as when the person was seen last, mail piling up at the door, rigor mortis, lividity, etc. But honestly a pathologist could answer that question much more accurately than I could. They are the ones that determine TOD.
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When I was at the coroner's office, a typical day would be examining victim's clothing from a homicide or suicide, typing blood samples and testing gunshot residue samples. Now at the police department, a typical day is spent in front of the computer putting in latent prints that the officers or I have lifted from items and searching for a match, or checking past searches of new people put in the system. Then I might go out to process a burglary scene.
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I work 4 10 hour days, but previously I've worked 8-5 Mon-Fri and on rotating 12 hour shifts from 6 am to 6 pm. It all depends on what's needed. I love investigation but didn't want to be a cop. A typical day depends entirely on where you work and what you do. If you do only crime scenes, you might have to go out to a car accident, a suicide and an industrial accident. If you're a DNA analyst, you'll spend all day in the lab with test tubes. If you're a fingerprint examiner like me, you might spend 8 hours in front of a computer looking at fingerprints. At a smaller department like mine you might do all three things in one day. Or any of the above might spend all day sitting at the courthouse waiting to testify. So there really is no such thing as a typical day.
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Sorry I didn't answer this sooner! I'm sure the blood could be used for DNA analysis, and it should be collected in a sterile vial or bottle. But then it would need to be refrigerated.
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DNA and fingerprints will still be the main forms of identification, but the focus on video, computers, social media and phone evidence will continue to expand. Anything that's not absolutely yes or no such as gunshot residue, fibers, maybe bitemarks will be discontinued.
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1) The camera.2) Fingerprint science. 3) DNA analysis.
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I don't know. I wouldn't think so, but that's really not my area.
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No, I'm happy where I am.
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Because human bodies are in constant flux. Cells slough off, fluids wash out other fluids, but a stain on a piece of cloth doesn't change.
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That's always a good question. Black powder or superglue will not ruin the DNA, so we can photograph the print and then swab for DNA. Usually we're swabbing areas that we wouldn't normally be able to get a print from (like textured steering wheels or rough gun grips or the edge of a plastic bottle that someone drank from) so we do one or the other.
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No. Almost all blood enhancement reagents will not destroy the blood for DNA testing. I don't think it would affect confirmatory tests either, but If we wanted to do a confirmatory test for blood such as phenolphthalein we would probably just do it on a spot where the marks were smeared or otherwise not useful as fingerprints.
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That depends entirely on where you want to work and what they require. At the coroner's office they required a bachelor's degree in one of the natural sciences like biology or chemistry. Where I work now, they only require a high school diploma, but give extra points in the interviewing process for higher education so we all have at least a bachelor's. If you want to do DNA work in a laboratory they will probably want you to have a master's or PhD in genetics. If you want to do crime scene work they might want an associate's or bachelor's in forensic science. So there is no one simple answer to that question.
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Okay, I am emailing you.
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The coroner's or medical examiners office, or find a college with an anthropology major and ask one of the professors.
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Yes, if you could find a microscopic hair analyst with a library of dog breed hairs, they could narrow the breed down. And if you got a DNA sample from the actual dog then DNA analysis could tie it to that specific dog.
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See above.
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I have never heard of that.
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I don't really watch any except the ones on the ID channel, and those are mostly about the investigation. But when they do mention forensic evidence, they're accurate.
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On the shooter's hands, not very long. When we did GSR testing we would not do it if more than 4 hours had elapsed since the shooting. On clothing, it could depend on the type of material and how far away the item was--if it's a smooth fabric it would probably brush right off, but a more fuzzy type of thick material might get some particles stuck in it.
That was talking about primer residue. Gunpowder residue is bigger, heavier, and hot so it can fuse to some fibers or get 'stuck' to the item by the victim's blood.
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i don't know. It would be worth a try.
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It all depends on where you want to work and what they require. At the coroner's office we all had at least a bachelor's degree in a natural science like biology, because there were not any forensic degrees then. If you want to be a DNA analyst you will probably need to major in genetics or biochemistry. At the police department where I work, with our very small lab, we are only required to have a high school diploma--but you get extra points in the interview process for advanced degrees so we all have at least a bachelor's.Hope that helps.
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I actually don't know how a DNA analyst tells human from animal DNA, but I don't think it's very difficult. We have an easy field test called Hexagon OBTI that can tell animal from human blood in a matter of minutes.
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I don't solve cases. Detectives solve cases. I suppose I actually 'solve' them when I get a fingerprint hit for a burglary where there would have been no other way to ever identify the burglar. That happens maybe 5-10 times a year. Otherwise forensic science is usually confirming or eliminating factors that are already suspected, and often provides information (say, what caliber of gun was used or where the burglar got into the house) that doesn't point to the identity of the criminal but adds details to the overall event.
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I'm afraid I'll need some more details than that.
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I'm sorry, I"m sure I answered this question months ago, I don' t know why it didn't post. The answer is there's no way to guess, a doctor would have to look at it. If there's no tissue, DNA might possibly be obtained from bones or teeth.
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It depends on the crime, but in general I guess you look for how the perpetrator got in, how they got out, and what they disturbed while they were there. Then I look for what we could get information from (such as surfaces that they had to touch that are smooth and glossy and might have prints, whether they left blood or bodily fluids behind that could be tested, whether they wrote something or used something that could point to their identity, etc.).
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Unless he actually ejaculated in his underwear, I don't see why there would be sperm in underwear he simply wore. But maybe that's one of those questions about men I'd just rather not know! I'm also not sure that semen would go back into solution when re-wetted like sugar or salt. So it might be possible, for all I know, but you'd probably have to ask a serologist or DNA technician. I'm sorry I can't be more help.
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I'm sorry, I wouldn't have any idea. You'd have to ask a pathologist.
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No. A .357 can shoot .38 bullets (not vice versa, or the gun will blow up) but 9mm can't shoot 38 bullets because they're shaped a little differently. It's confusing because what we call .38 caliber are actually .357, and 9mm is actually .380--in size, but a 9mm gun cannot shoot .380 bullets. You would have to read the forensic report carefully and maybe ask for clarification. I've never worked in ballistics, so perhaps there's a chance that the report is saying that the projectile had a .380 diameter, not that it was a .380 bullet, in which case it could have come from a 9mm gun?
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let me try to answer these one by one:You will need at least a 4 year degree, most likely. It's well worth it if you really enjoy the work. Nothing in the public sector pays as well as the private sector.If you've spent all your life in a morgue, you probably already know a few forensic scientists. The best thing to do is talk to them and see what the requirements are in the places you want to work.
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After I spent 10 years as a secretary, bored out of my mind. I always liked mysteries and I liked science, but I never really thought about putting them together until long after my first round at college.
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If there was semen on the toilet seat and it was still wet and sticky enough to stick to skin and then be transferred to underwear, then I suppose it would be possible.
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I'm very interested now in phone number 'spoofing' that the telephone scammers use to call us, but the technology is a little beyond my ken. Actually a lot beyond my ken. I have a co-worker who could explain it but we never have time.
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There are numerous techniques for obtaining fingerprints from surfaces--black powders, colored powders, alternate light, superglue, dye staining. Once you can visualize the print, comparing one to another is done by noting all the information (where ridges end, divide, form a dot, have a scar, etc.) in one pattern and comparing it to another print's pattern. This can be done by a computer so that thousands to millions of prints can be searched quickly, all day, every day, all over the world, but is always confirmed by human beings. Despite what you see on TV!
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See next question.
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See above answer.
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I'm sorry but I have no idea. You'll have to ask the lab. I'd love to know myself--I'd also love to know why your ex drugged his own drink and then paid to have a lab analyze it.
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If you look through previous answers you'll find a number pertaining to this. Each agency and position may have different requirements so the only way to know is to call the places you are interested in working at and ask them. For my current job I only need a high school diploma but we all have at least a Bachelor's degree. If you want to do DNA analysis they may require a PhD. I applied to the police department that posted the vacancy. Most have online postings now so it's pretty easy. Yes, I've had a lot of continuing education through other police departments and forensic organizations.
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I would think that would become obvious at the autopsy. If the victim is not dead, say missing, then that information would most likely come to light when they talk to the victim's doctor or family members.
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No. There are cases and victims that I feel sorrier for than others, but nothing reaching the level that I would call emotionally involved. Everything is over by the time I get there, and then I don't usually see the victims or other parties again so there isn't an opportunity to bond.
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a) I work at a police department. We have a small lab with equipment for processing for fingerprints and the rest of the office is regular office stuff--desks, computers, supply cabinet, coffee machine.We work mostly days, with someone on call tonight. b) Both. I work on my own for most call-outs and working on pieces of evidence, but for larger cases then we work as a team. c) Both, again. We have a lab but I probably spend only 5-10% of my time, on average, in there.
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No. I've worn glasses since the 5th grade and had no trouble being hired.
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It depends entirely on where you work. The requirements are whatever your employer says they are (same with your job title). DNA analysts are often required to have a PhD in genetics. At the coroner's I had to have a BS in one of the natural sciences. At my police department they only require a high school diploma, but give extra points for advanced schooling so we all have BSs. The best way to get an idea is to go to different agencies' websites and look at help wanted postings.
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See above.
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I very much doubt anything self-ignites, but I'm not an expert on explosives. But where oil is concerned I'm fairly sure you would need a spark to ignite it.
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Yes, I'll email you.
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Who knows? It all depends on where the samples were and how thoroughly the surface was cleaned. If blood was on a glass window and it was thoroughly cleaned, then all of it is probably gone for good. If it's a porous bare wood, then probably not...unless it was thoroughly soaked with a bleach solution. If it's a large area, even if it's cleaned there might still be some left in the nooks and crannies--like in a tile floor, the ceramic may be clean but the more porous grout between the tiles might hold a substance. So there is no way to say it's always possible or it's always not possible. PS Luminol helps you find blood. Christmas Tree stain is used to stain a dried semen sample on a glass slide. It doesn't help you find the semen in the first place.
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I don't understand what you mean by 'purification of blood.'
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I'm sorry I can't give you any concrete timelines (a pathologist would know better than I) but I would think at least a couple of days. Air conditioning would definitely make the smell more tolerable than no air conditioning, but still storage units usually have just enough A/C to keep high heat and humidity from causing mold or causing problems with electronics. That's not the same thing as refrigeration. It might also depend on how close the bodies are to the door. People walking by might catch a whiff of something bad but assume that an errant mouse or cat somehow died inside. Thinking that, passers-by might be reluctant to open the door to someone else's property. The storage unit owners, even seeing it unlocked, might try to at least contact the client first, maybe calling the home and the guy's cell which of course he's not answering. Honestly you could probably make it anything you wanted--if you want it discovered quickly, put the unit at the front of the property or give it a fussy neighbor client who visits that same week. If you want it to be a long time, put it at the rear of the property where no other clients visited their units and all units lead to an outer door that didn't show any signs of damage (because both victims and husband entered with their assigned passkey) so the storage unit employees never had a reason to enter to notice either a smell or an unlocked unit. Good luck!
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I am so sorry I didn't get back to you earlier! I can be reached through my website at www.lisa-black.com.
Though if you look through previous questions and answers, you might find that someone has already asked what you would like to know.
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Having to testify in court, which is the most awful kind of public speaking ever because there are people there trying to make you look incompetent. You deal with it by practicing and preparing and training yourself not to take it personally. The other challenge is learning to communicate, in different ways with different groups. With victims and family/friends of victims, you have to be empathetic without talking to them about the investigation, because that's the detective's job. With co-workers, detectives and cops, you have to give them all the information they need or want without bruising their egos. This takes practice and focus.
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I don't know what you mean by 'abusement'. Like child abuse, or sexual abuse? Basically you look for whatever confirms or refutes the victims' story or your theory of the crime. First was the suspect at the right location at the right time for this crime to have occurred--you look at receipts, witness statements, GPS, anything that puts the relevant people in the right places. Then is there physical evidence of the alleged action occurring--bruises, blood, semen, a weapon found at the location. Then is that evidence tied to the suspect by DNA or other means?
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Possibly, depending on the time elapsed.
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As far as I know--and I am not a DNA expert--multiplying the frequencies of each allele tested is what gives us the astronomically high numbers of elimination of people having that same set of alleles. A SET of data points eliminates many more people than a single data point, in other words.
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Okay, I emailed you.
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In general and barring other explanations, if the area around a hole caused by a bullet is gray that is caused by fouling, or vaporized lead from the bullet exiting the gun within approximately 6 inches of the hole. That would indicate that the hole is an entrance. Is the gray on the inside or the outside of the hat? I can't explain why there would not be blood on the hat (again, are we talking the inside or the outside?) unless it was literally blown off the head before the blood began to spill, but that is unlikely in the case of an exit I would think.
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If bones survive the cremation process and show signs of physical trauma (such as fractures), then yes.
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I don't know too much about indented writing but I would suggest using alternative light sources like IR or UV.
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We use math in calculating point of orgin of bloodstain patterns. The sin of the angle of impact equals the width over the length of the blood stain. When we have a group of bloodstains on a surface like a wall or floor we can use this to calculate the point of origin. Also the fingerprint database searching uses complicated algorithms to rank fingerprint matches in terms of similarity. Forensic chemists probably use math more than I do--for example, to calculate the amount of alcohol in a person's blood. I hope that helps!
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I'm sorry but I would have no idea. You'd have to ask a pathologist.
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Apart from the physical hardships (bad smells, having to get out of bed in the middle of the night, sometimes having to work 16-20 hour days), the worst part is what would be the worst part in any job--problem co-workers or bad management. Happily I don't have issues like that right now, but if a really horrible management staff were hired in, that might make me quit or at least look for another agency.
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I did not know gooseflesh was a characteristic of rigor, and if I'm understanding rigor to mean rigor mortis then of course they'd already be dead before reaching that stage. But as for how likely it is that pre-mortem gooseflesh would remain after death or be affected by freezing after death, I'm afraid you'd have to ask a pathologist. I don't have the expertise to answer that.
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Unfortunately, I cannot answer any of these!1. No one has asked me about the new OJ knife, and in any event I don't know any more than anyone else who has read the papers. 2. That's impossible to say. It would depend on what kind of DNA evidence is there, what the soil was like around the object and how exposed it would be to elements like rain and heat. If it were simply buried in the yard I would think it highly unlikely that anything could be recovered after all this time, but we never say never. 3. I have no idea what the future holds. More technology might be able to detect ever tinier amounts of DNA, but it can't construct DNA where none exists. Sorry if that's not too enlightening!!
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You can't go wrong with science classes. When I was in college they didn't have courses specifically in forensic science, so that wasn't an option. Look especially for classes where you can do hands-on work in the lab or field. And different agencies will have different requirements, so you might want to go online and check out the different vacancies to get some idea of what requirements are out there.
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See below.
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I'm afraid you'd have to ask a doctor. I'm not an expert in that area, but I could make a guess that it depends a great deal on what he lands on when he falls. Also, has anything in the loft changed recently? Maybe he rearranged the furniture so his bed is closer to the edge?
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Probably either a (small) plane crash or a shotgun blast. The first was an accident and the second was a suicide, so I suppose you could say the person was caught.
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Vomit, horseradish, copper (as in pennies) and some cleaning compounds can also give a positive luminol reaction.Good luck on your project!
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Sure, I'll email you!
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I'm sure you are, since most positions are civilian positions without those kinds of restrictions.
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Please see above.
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I'm sorry but I have no idea. You'd have to ask a pathologist about wound appearance. Sorry I can't be more help.
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That all depends on where you work. If it's a large department and shifts are covered 24 hours, you might not have on-call times but might have to work late when on a scene. As to how often I actually have to take a call, that is totally unpredictable. Sometimes I can work a whole weekend without a single call, overtime or otherwise, and other times you're out all night. If you have a situation like child-care concerns or something where call-outs could be a problem, you're going to want to be aware of that. The best way to know is call the places you'd like to consider working and ask.
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See above.
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I'm sorry but as I say below I am not trained in automobile accidents, so I wouldn't know any more than anyone else about how to determine what happened during the accident. I'm sorry for your loss.
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Improved in what way?
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I'm not really in the medical field, so I don't know how to answer that. Can you clarify?
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I'm sorry but I don't know what you mean by "a summary about forensic analysis." I'm afraid you'll have to be more specific than that.
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Okay I will email you.
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Yes, there are visible differences (under a microscope) between the different kinds of body hair.
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Requirements for a position are up to the agency doing the hiring. The best way to know is to check their websites for open position announcements, or contact them and ask.
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Officers who talk their sergeants into calling us out to a scene for five minutes of processing because they don't want to use the fingeprrint kits that they've been issued for just that purpose.
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I'm sorry to hear about your brother. Unfortunately I have no idea how much blood there should be, you'd have to ask a pathologist, but from my experience I can guess it would depend on two things--what kind of surface was he on--concrete, tile, carpet, dirt? Also, how long the heart kept pumping after the injury. I have seen gunshot victims where they barely bled at all, and others were completely soaked practically head to toe. So there are a number of factors that will affect this.
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I have not because I am not trained in facial construction. We did have a case in which we had a reconstruction done on a skull which helped identify the person. As for the casket, I don't see why not, depending upon the skill of the wax worker.
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Sure, I will email you.
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That's a good question but I'm afraid I have no idea since I've never worked anywhere except the U.S. I would guess that the scientific techniques would all be basically the same but the administrative aspects (paperwork, how reports are worded, what is done in which types of cases etc.) would vary.
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I would be happy to help you. Please email me off list at lisa-black@live.com and tell me what you need help with, for instance: How involved does this have to be? Do you need to do just a demonstration or an actual experiment?
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Okay, i'll email you.
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No. There is no time stamp on DNA, so far as I know.
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I'm sorry but I have no idea. You'd have to ask an accident investigator.
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I think you mean to check for that wherever they're lying to see if the body had been moved?
Well, not everyone evacuates upon death. Also the clothing absorbs most of it, and any that leaks through could also have leaked through after being moved. But yes, that could be an indication that the body had been moved just as bloodstains would.
Hope that helps!
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If you look over previous answers, you'll see that it depends upon the requirements of where you want to work. My job requires only a high school diploma but gives extra points for college degrees, so we all have at least a BS. A larger lab might require a BS. If you're doing DNA work they might require a PhD. The only way to know for sure is to call a few places you might be interested in and ask what they require. Best of luck!
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Wow I am sorry I somehow didn't answer this question!! In my experience we do a presumptive test for both and then send to DNA testing because they will confirm the presence of DNA in the quantitative step. We do have the OBTI test for human blood but there's no reason to do it u less we're in a huge hurry to confirm human blood.
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I'm fairly sure that the high temperatures used in melting metal would destroy any DNA.
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I've been involved with a number of child murders but in every case the child was killed by someone in their own family, usually a parent. In one case a 6 year old was shot by an acquaintance of his older brother's, but the 6 year old wasn't the target, simply an inconvenient witness. I've never worked one where the child was abducted. I don't have chilidren so it's actually easier for me than for people who do. To me it's largely the same as any other murder, though harder in some ways because the victim looks so vulnerable. You handle it because there's so much to be done and you have to do it right, so thinking about all that keeps you from thinking about the tragedy of this young life.
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I have no idea, so I asked my co-worker. She said:My first question would be was the 20GB forensic wiped? Was it completely empty when the 8GB was put on it?Second, does the software that you use to image produce working files or executable programs that are needed to view the image? Otherwise 8 GB is 8 GB so there can't be more.
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That's impossible to say, since there's no way to know if perhaps it was left but simply not discovered. Perhaps they touched something that didn't appear out of place so we didn't fingerprint it. Perhaps they touched everything but have very dry skin so they didn't leave prints. Perhaps they left DNA on the steering wheel of a stolen crime but we didn't collect it because the state lab doesn't do touch DNA analysis on non-violent crimes. There are too many factors involved.
I can say that burglars cut themselves climbing through broken windows perhaps 2-5% of the time. But only a fraction of burglars break windows, so....
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Please see earlier answer about convicted felons. But as far as I know it would probably depend on the kind of crime, whether it was a misdemeanor or felony, etc. Many juvenile records can be sealed or expunged as well, so that process could be worth checking out.
You can have your student contact me Via my web site at www.lisa-black.com and I'll try to help!
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I'm sorry but I am not trained in accident reconstruction. That is a very specialized field. I would have no idea whatsoever.
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If you're going to be a DNA analyst, you will probably not be working with gunshot residue as well. DNA labs are tending to want their analysts to have a PhD in genetics and focus solely in that area, but it would be best if you called labs at which you might want to work and make sure. Best of luck.
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That depends entirely on your digital situation. How big is the database (how many fingerprints does it have to search through), are you searching both fingers and palms, how many servers or whatever can you devote to the task, and have the search parameters been narrowed down, say to only right hand fingers or only the left index. All those factors will affect it so that a search could take anywhere from a few seconds to a day .
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I'm sorry, I wouldn't have any idea. Do you mean dating the actual pills, or once they're in a person's system? If the former I think you'd have to ask a chemist, if the latter, a toxicologist. Sorry I can't help.
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Yes, they are different substances.
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I would try an alternate light source, UV or IR light or even white light with colored filters. That might make it more visible. Other than that, I don't know, sorry. You'd have to ask a document examiner, they might have more techniques for working with paper.
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I'm sorry but I have no idea. That's a question for a pathologist. Sorry I couldn't help!
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How to best process or obtain a piece of evidence.
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It will turn a dark red brown once it's completely dry, and will stay that color so far as I know if conditions stay consistent. If it changes further it would probably just fade a bit.
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I don't know what malted means, but I suspect the answer is no. Just brushing hair can pull it out just as in a struggle.
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Unlike what you see on TV, a hair and fiber expert never 'matches' hairs or fibers (except in the case of DNA analysis). We can say they are 'consistent with' having come from this person or this article of clothing in that all the microscopic characteristics are the same or within a group of the same characteristics. Though dyed hair is quite distinctive with the growth since dying and the color so it would be a strong indication that they came from the same person, you couldn't actually put a number on it (like 'there's a one in two billion chance this came from someone else', like DNA). That's largely why hair and fiber comparisons are rarely done any more.
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See above.
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Without knowing you or your relative, I really couldn't guess. Maybe they hoped you'd read the instructions first?
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Being 'on call' and knowing you can be interrupted at any moment of the day and have to go to a crime scene, even if it's the middle of the night or a holiday. I've also had to change vacations because I have to testify in a trial. I hate that.
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No.
Juries' unrealistic expectations of forensic science may make court cases harder to win, but that's not the same thing.
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As far as I know since they would all be the same type of cells, they could not be separated.
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All the interesting, different, bizarre stories that make up the crimes that have happened that we have to investigate.
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I doubt I can help you but I'll try to get the pic.
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Sure, I'll email you. You might also want to look over earlier questions on this site.
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I would suggest biology or chemistry, but that was what everyone took when I started out, so I may be behind the times. Your best bet is to call the crime labs you might wish to work at and ask what they prefer. Also check employment postings on the forensic organizations websites, such as IAI and AAFS. That's the only way to be more certain what they actually want.
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Pros: Advanced technology and political attention (i.e., funding)Cons: Reality--evidence isn't always there, the job can be dirty and hard, budgets are always limited
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I like all the interesting, different, bizarre stories that make up the crimes that have happened that we have to investigate. I dislike being 'on call' and knowing you can be interrupted at any moment of the day and have to go to a crime scene, even if it's the middle of the night or a holiday. I've also had to change vacations because I have to testify in a trial. I hate that.
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Only local, to other government agencies or for training.
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Wouldn't that get the whole crime scene wet? And wouldn't a layer of hair indicate that the hair was a diversion, since obviously no one would normally shed that much hair while committing a crime. It scattering hair wouldn't affect fingerprints or touch DNA, which crime scene techs would be looking for more than hair anyway. Most labs don't even analyze hair any more. Also, I should clarify, hair cells don't have nuclear DNA. DNA in hair usually comes from the skin cells that hold the hair in your scalp and cling to the root. So if you're using cut hair there would not be any nuclear DNA to obtain. Mitochondrial DNA is a different type of DNA present in your cells' mitochondria. It will be the same throughout your body but is passed down unchanged from mother to child so it will be identical with your mother, your mother's siblings (assuming the same grandmother), your siblings from the same mother, your first cousins from your maternal aunts, etc. But very very few labs test mitochondrial DNA so it's unlikely it would be tested from your crime scene unless it was extremely high-profile and they had no other evidence to use. And then they'd have to have a suspect to compare it to or it would be useless. (CODIS, the national DNA database, is nuclear DNA.)
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Sure, send me your email address. If you don't want to post it here you can email me through my website: www.lisa-black@live.com.
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A forensic scientist, forensic specialist, forensic technician can all be the same job or different jobs--your title is whatever your agency/boss says it is. There's no strict uniform code for titles. Usually any natural science is a good background for forensics. It may depend on whether you intend to work in a lab or on crime scenes. The best way is to look at job postings that interest you and see what the requirements are. You can view job postings on professional organizations' websites such as www.aafs.org or www.theiai.org. Good luck.
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I wasn't aware that there were theories other than: Do the right thing. Don't do the wrong thing.
Figuring out which is which isn't really that hard. Doing it might be, but it's usually not hard to figure out.
Hope that helps!
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Send me your email address. If you don't want to post it here you can email me through my website: www.lisa-black@live.com.
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I'm afraid I don't know enough about how 3-D printing works to be able to answer. I can guess that it might be handy for reconstructing items such as shoeprints and tire tracks from photos or scans. Other than that I don't see where making a copy of something would necessarily affect a crime. And as far as I know they haven't reached the point of replicating on a cellular level such as DNA.
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A forensic lab wouldn't examine a hyoid bone. That would be done at the autopsy by the pathologist. To the best of my knowledge there isn't anything else to examine, just whether it's broken or not, and as I said it doesn't conclusively prove anything one way or the other.Best of luck.
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I'm sorry but that can, and has, fill several textbooks. There's just no way for me to summarize it in a paragraph.
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School project?Email me at Lisa-black@live.com and I'll send you answers I've accumulated.
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It's concerning because juries expect more than is reasonable. Not every case is going to have DNA evidence and you don't always find fingerprints on a surface and eyewitness testimony sounds convincing but can be very unreliable. However an expert can hopefully explain all these issues to make the limitations clear, provided the jury listens.
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Why does this sound like a homework question?
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Many if not most crime scene and forensic work job are now civilian, which means you don't need to become a police officer and are not trained at the police academy, etc. Some agencies do have their forensic staff become sworn officers, so the only way to know is to ask. I've worked in forensics for over 20 years now and I've never been a police officer.
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Sorry I went to the link but it just loaded forever and I coudn't view the picture.
UPDATE: Hey on a whim I tried the link again and could see the picture. Unfortunately I still couldn't make a guess as to what the pile is. Though in my opinion it looks too light-colored to be a decomposing animal.
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I'm sorry, I really couldn't. You need to ask a pathologist. Best of luck!!
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They could try not to leave it in the first place--wear gloves and a hat, and don't cut yourself on the window you broke to gain entry. And wear a mask since you never know who has cameras where in this day and age!
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Take as many science courses as you can. Visit all the crime labs in your area, talk to people, and try to get an internship in one or more of them.
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I'm sorry, I thought I answered this one. We work 40 hours per week, some of us are on four 10s and some on rotating 12 hour shifts. Each of us takes a turn on being 'on call' for overtime calls.
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"Unreliability of a science" is pretty a broad swipe, so I don't have any idea what you're referring to. Any line of work--government, plumbing, brain surgery--can be unreliable if the people doing the work are undertrained,overeager, arrogant or lazy.
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If someone is under a doctor's care and the doctor signs the death certificate, then there most likely will not be any examination at all. Autopsies are not done in every case, only under some circumstances. Any examination would be done at autopsy.
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I was going to email your teacher but you didn't give me her complete address, just her name. Please go to my website and hit 'contact me' and let me know where to send a response. Thanks and good luck with your project.
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I'm not a DNA expert, but I know that half the 23 chromosomes in a person''s nuclear DNA come from one parent and half from the other parent, so part of the father's DNA would have to be present in the child.
Mitochondrial DNA (which is a different substance entirely, a circular structure present in the cell's mitochondria, whereas nuclear DNA is a double helix present in the cell nucleus) is passed from mother to child without recombining, so only the mother's mitochondrial DNA is present in the child. We test for mitochondrial DNA when nuclear DNA isn't available, like when we only have cut hair or fingernails or old bone to work with.
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I don't know that as a fact, but I would think so. Simply washing with soap and water will take care of it.
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I'm not a doctor but I don't see why not. If the flesh and muscle is being crushed between the ribs and the person's hands, that would have to cause damage. Sometimes CPR can cause cracked ribs.
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I checked city and county websites for job postings.
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No. Depending on where you work and what you do, your employer might want you to be 'certified' in one area or the other.
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No. You might be able to estimate muzzle to target distance from a spray pattern, but not firearm type or brand.
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I'm sure document examiners could do this fairly easily but I don't know exactly how. I would guess that alternative light source (like infrared or ultraviolet spectrums) could show that there is no difference between the signature and the rest of the document. Or I believe thin-layer chromatography could show that the chemical makeup is the same. A Questioned Document Examiner could tell you much more.
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You can't go wrong with as many science classes as you can get, and especially anything that's specifically forensics. Programs that have hands-on labs for processing evidence and crime scenes would be great. Titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or whereever you might be interested in working and ask them. At the coroner's office we had to have at least a bachelor's in a natural science (this was before they had forensic science majors). At the police department where I am now, they only require a high school diploma but you get more points in the interviewing process for having a four year degree, so we all have one. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. Good luck.
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Sorry but I am not trained in facial recognition and I am notoriously bad with faces. My husband teases me about it all the time.I'm sorry I couldn't help!
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Okay, I emailed you.
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You have to have good attention to detail, can work under stress and unpredictable circumstances, be patient and cautious.
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It could help if it's pulled hair, not cut, and if they were super-careful to leave no fingerprints or any other kind of possible DNA samples so that the police had no choice but to test the hairs for possible suspect DNA. It would also depend on the scene--if it's a heavily traveled bank, for instance, so there is a ton of discarded hairs, the police would hardly test them all. If they leave a tuft of hair on say, a chain-link fence used to get away, where the police couldn't help but notice it, then they'd have a better chance of making it a useful diversion.
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You can't go wrong with a lot of science classes. When I was in college they didn't have courses specifically in forensic science, so that wasn't an option. And different agencies will have different requirements, so you might want to go online and check out the different vacancies to get some idea of what requirements are out there. You can also call labs you're interested in and ask, that way you get to 'meet' some people too.
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I'm sorry but I would not have the slightest idea. It would depend entirely on the path of the bullet and what it hit. Sorry I couldn't help!
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Okay I will email you. I also suggest you give yourself more lead time on future assignments....
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Each agency will have their own requirements. The best way to know what to expect is to call all the crime labs in the area and ask what their requirements for various positions are. You can also check websites for forensic organizations such as www.theiai.org and www.aafs.org and examine their job postings. Best of luck!
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First question: My guess is (simply based on experience) is there would still be sticky blood at the head wound enough to smear on stuff, perhaps. It wouldn't be spurting or perhaps even dripping at that point because it should have begun to coagulate. Provided it didn't dry entirely, so the body would need to be in a place that's neither too dry nor too hot and certainly not both. Cool and humid would keep it from drying. The killer might bash the head but there could be a lack of blood spatter or flowing/pooling blood from the wound, since the blood won't be flowing as it would be if the person had still been alive. Also the problem with moving the body is lividity where the blood pools at the lower spots of the body due to gravity (like on the back if the person is lying supine. After several hours it should be fairly noticeable and then if you move the body, the lividity pattern doesn't quite match the position.
Hope that helps!
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I'm not sure what you mean by 'off the job training.'
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Your nuclear DNA is the same in the skin cells holding your hair in place, your saliva, your blood, your skin, your bone marrow etc. Your friend's DNA is of course different from yours, but the same in their saliva, their blood etc. The criminals probably threw someone else's hair around the crime scene so it wouldn't match them.
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Interesting question, but I doubt I can be of much help. A body can do one of two things after death--decompose or desiccate. So it might turn into sludge or it might become a mummy. It might depend on temperature or pH levels (more relevant if the car was buried) to determine which way it would go. Being sealed would definitely slow the process to a crawl. I had a body in an attic once that was partially wrapped in plastic, and after three years the wrapped areas still had plenty of flesh and the unwrapped parts were down to bone.
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Because not everyone's fingerprints are in a database. You only have fingerprints taken when you are arrested or apply for a job or some other license for which it is required. Not all of those necessarily end up in a database accessible to the agency that has the unidentified person. And DNA such as hair only helps when you have a profile to compare it to--if the unidentified person is a convicted felon so their DNA might have been entered when they went to prison, or if there are family members available to give a sample (in which case you would have to already have an idea of who the person might be). It's not really like TV. We don't have databases of every single person and every single substance known to man.
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I'm so sorry but I wouldn't have any idea since I've never worked in toxicology. And since my agency doesn't do it either I don't have anyone to ask.
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Usually in forensic science or any kind of natural science. If you want to go to into drug testing or toxicology, major in chemistry. If you want to do DNA analysis, then biology or biochemistry.
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Take all the science courses you can, and visit and talk to forensic science personnel. You'll find them very approachable.
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See above.
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I spend about 90% of my time sitting in front of a computer looking at fingerprints. The rest of the time I go to crime scenes to photograph and process for fingerprints and collect items of evidence. When I was at the coroner's office I probably spent 40% of the time examining victim's clothing, 10% on gunshot residue testing, 30% on hairs and fibers, and 20% everything else.
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I'm sorry to hear about your father. The hyoid would normally be observed during the course of an autopsy, but I have had pathologists tell me that people can be strangled without breaking the hyoid, and the hyoid can be broken due to other reasons,so it doesn't conclusively prove anything one way or the other.
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How much chemistry you need depends on what type of work you do. As long as you're not actually working in toxicology or DNA, you shouldn't need to be a great chemist as long as you can reliably work with chemicals and combine them properly (like following a recipe). And as long as you are a reliable and honest employee then the job is secure, once you get it, but I will be honest--there's a lot of competition in this field right now so getting into a position might be difficult. You should definitely have a back-up plan.
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I do both, but it depends entirely on your department. People at smaller departments usually have to cross train and fill several roles. At larger departments with more personnel, people may specialize. The only way to know is to call the agency you want to work at and ask.
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Yes, that's what we do at our agency, depending on the analysis required. We can process for latent prints and analyze them and also cell phones and computers. For things like DNA analysis and bullet comparison, we send that to the state lab. Every agency is different depending upon available personnel and equipment.
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Yes, all the time. That's part of my job. But that will depend on what your job is, some people work only in the lab, and others work only at crime scenes.
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Someone trained in accident reconstruction might be able to do so, but not having marks on the road makes it more difficult.
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There are usually levels of the job, like Tech I, Tech II etc. depending on years of experience that will come with an increase in salary. After that one can progress to supervisory role. But there aren't a lot of steps, really. For instance I have nowhere to go from my current position, and I don't care. I like what I'm doing and have zero interest in being the supervisor.
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Please email me all questions at once at Lisa-black@hotmail.com.
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Worrying that I might have missed a piece of evidence at a crime scene or in a lab process.
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Our building is relatively new so I work in an nice office. If it weren't for all the skull-themed items you wouldn't know you weren't in an accountant's office or something. We have a small lab where we process items with superglue or dye stain. I have to go to crime scenes, of course, and those can be cramped, filthy, rainy and/or hot.
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I loved mystery shows and books when I was a kid. I always wanted to be a detective, but didn't want to be a cop. And I always liked science.
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Take a lot of science classes, and keep up your English skills.
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It would still be discoverable up to a point. How much dilution it could take, I'm afraid I don't know.
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Plan to go to college and study biology, and try to find a college that has the specific major and courses you want.
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That's an excellent question that I wish I had a better answer for. I'm guessing it depends on the interviewer's history and experiences. For instance due to curriculum changes, in my area we actually get much better-trained candidates from the community college and the for-profit local schools than the large, more prestigious university. It depends on what the curriculum entails and how much hands-on work and practice in your specific field (which may be difficult to do in an online course, but if the bricks and mortar schools don't provide it either, then perhaps it makes little difference). If I were you I would detail that as clearly as you can when applying for jobs.
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Like any other line of work, it all depends upon the mistake made, what effects it had, and how culpable you are. If it's a typo, just fix it and maybe make a note in the file. If you get someone killed, your boss will probably have to fire you. If it was an honest mistake, then you might get a note in your file. If you steal or invent evidence, you'll be fired and probably not work again.
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Sending it through the mail is not a problem if packaged properly. The color of the top depends on what kind of testing is requested, drug, DNA, etc.
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Probably very good, as long as you're honest about it. They usually go over the questions before you start the polygraph so take the opportunity to tell the truth. Then, in the polygraph, you have nothing to hide.
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I had a bachelor's degree in biology when I applied to the coroner's office in 1998. They required a degree in one of the natural sciences, and there were no forensic science degrees back then. Only you can decide what you want to go to graduate school for, but as for career requirements you might look at the American Academy of Forensic Science and the International Association for Identification and look at their job vacancy postings to see what they require. As for other degrees with a bio major, there are many private labs for DNA, drug testing, paternity testing, water and food standards analysis, etc. as well as hospital labs that might require. Again, look at job vacancy postings in all these areas--they should be easily found online and they should state the educational requirements. It will also let you see in what areas more jobs are available.
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Yes. Unless I could make it as an architect. I would really like that too.
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Yes, we do it every day.
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That all depends on where you work and what your job duties are. I spent about 90% of my time sitting in front of a computer looking at fingerprints. When I was at the coroner's office I probably spent 40% of the time examining victim's clothing, 10% on gunshot residue testing, 30% on hairs and fibers, and 20% everything else.
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See above. I have a bachelor's degree in biology, plus over a thousand hours of continuing education in forensic topics (accumulated over 20 years).
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Most agencies do not have huge staffs like on TV, and people tend to stay in the field. Thanks to the TV shows there is a universe more competition than I faced. On the other hand thanks to the current emphasis on forensics, agencies are always expanding--the federal government will be setting mandates and providing grant money to expand labs and services Check out every level (city, county, state, federal) in your area that you can find and also private labs. Check the websites for the International Association for Identification and the American Academy of Forensic Sciences.
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Usually the biggest worry is getting sick or faint around dead bodies. But actually they rarely do.
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I have no idea. Do you have a copy of the autopsy report? That should be available fro the coroner's or medical examiner's office.
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I would never want to discourage someone from this field because I love it. But it's a very popular field right now so I would also advise anyone to have a career plan B.
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I'm sorry about your friend but I wouldn't have any idea what it means. You'd have to ask a doctor if stiffness of the limbs is a symptom of certain drugs.
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Temporarily, with sandpaper or chemicals, but they will grow back in the same pattern.
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Not often. Since a glove itself isn't secreting sweat and oils, there's really nothing for it to make a print with until it gets a little dirty or if the surface it's touching is a little dirty.They can be wiped off as easily as any other print.
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We work 40 hours a week plus overtime when needed.Right now I'm on four 10's but I was on 12 hour rotating shifts, 6 am to 6 pm, and will be going back to that next year. I liked that schedule.
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That entirely depends on where you want to work. Each lab has its own requirements. My first job wanted a bachelor’s degree in any natural science. My current job just requires a HS diploma, but it helps to have advanced degrees so we all have at least a B.S. There is no uniform job definition or title for forensic work--your title is whatever your boss says it is, and crime labs can be a small place that only tests drugs and fingerprints or a large, full service place that does everything from questioned documents to DNA.
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An excellent site is my friend Dr. Lyle's "The Writer's Forensic Blog" - https://writersforensicsblog.wordpress.com/
You also might attend any public events at your local police department, such as a citizen's academy. There you might meet members of the crime lab and see if any might be amenable to you emailing them questions now and then. Feel free to email me as well via my website: www.lisa-black.comBest of luck!
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Wow, you'd really have to ask a pathologist. But I would assume a stab wound with a horn would look different than one from a knife, more round and uniform. You might also have a sliver of horn break off in the wound. The round wound in the flesh or bone might make a doctor think it came from a bullet at first, but with no bullet found then they might think icepick or something horn-shaped. Best of luck!
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Call all the crime labs in your area and ask what their requirements are. You can also check websites such as those for the American Academy of Forensic Sciences and International Association for Identification which will post vacancies and job descriptions.
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You can say that this blood came from this person. But you have to have a DNA sample from that person to compare it to. (A swab from inside the mouth is fine, it doesn't need to be blood.) or they need to be already in the DNA database.
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Sure, because fingerprints will have ridges and gloves will not.
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1. Review earlier answers to similar questions.2. Take as many science classes as you can.3. Check out the websites of the American Academy of Forensic Sciences and the International Association for Identification and any others you can find, and look at their Employment Opportunities section. Job postings will tell you what qualifications are required.4. Call all the crime labs in your area (city, county, state and any other location where you might want to work) and ask what degrees their staff have and what are required. (For instance my agency only requires a HS diploma but we all have at least a B.S.) Every agency will have their own requirements. Best of luck to you!!!!
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Okay I emailed you.
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Where I live we have many burglaries. There really isn't a busiest time of year, though things sometimes pick up when the kids are out of school. When I worked at the coroner's office I also swore there were more homicides in September and December.
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Wow, I'm sorry but I have absolutely no idea. You might need to ask a pathologist.
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Yes, absolutely.
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Sure I'll catch you when I'm back at work tomorrow.
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For homework assignments can you please email me offline at: lisa-black@live. com and I can send you a list of answers to these types of questions.
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A good knowledge of chemistry is helpful to be able to understand why certain processes work the way they do. We use math to mix reagents and calculate angles in bloodstain pattern interpretation. Any knowledge can be helpful because we deal with every kind of person, job, situation, and object there is.
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All the interesting, different, bizarre stories that make up the crimes that have happened that we have to investigate.
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Please email me at Lisa-black@live.com.
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That would depend on what it is you want to do. If you want to work on crime scenes, then I would say to major in forensic science. If you want to work in a toxicology lab, then the degree in pharmacy might be better. I really don't know so I would examine job requirements listed in online vacancy postings, or call agencies at which you might want to work and ask them. Best of luck!!
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That's impossible to answer. Things can range from something like the Orlando shooting, which was massive to process but in terms of 'whodunit' it was over as soon as it began. Then you might have a person shot on the street, no casings, no witnesses--a very simple event, but nearly impossible to solve unless someone talks. Then there's every possible combination in between.
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Yes, quite possible. The breast bone blocked the bullet from hitting anything vital and so it wouldn't be fatal. We've had plenty of people shoot themselves in the head but the skull deflected the bullet enough that they either survived or had to fire a second shot.
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I'm not sure what you mean by 'specialize in homicide'. Forensic techniques can be utilized to investigate any crime, but if you mean you only want to work on homicides, then I don't know of any positions like that. The closest thing would be to work for an agency where the work is mostly homicides, such as a medical examiner's office. But even they would also investigate suicides, industrial accidents, etc.
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That depends on how much time has elapsed and the environment. Of course the more time, the longer it's been the more decomposition will have occurred. A very fresh body might not smell like much of anything and a very decomposed one can smell like terrible bodily functions or really rotten garbage. A very dry environment might cause the body to desiccate (much less smelly) or a wet one will prompt more decomposition.
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Being 'on call' and knowing you can be interrupted at any moment of the day and have to go to a crime scene, even if it's the middle of the night or a holiday. I've also had to change vacations because I have to testify in a trial. I hate that.
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Witness statements would be included with the officer's work, not the forensics unit. I'm sorry for your loss. Is there a victim's advocate at the police department that handled the crash that could help you? They could walk you through where to find all the information you want. You didn't include your email address.
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Attention to detail, an interest in science and the ability to occasionally work in chaos.
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I'm sorry, I answered this a week ago but somehow it didn't post. A pathologist will usually estimate time of death during the autopsy. It can be very simple and require the body temperature and not much more, or it can be very difficult and cover a wide range of possible time, especially if a lot of time has elapsed since death. The more time, the harder it gets.
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The title 'forensic scientist' doesn't mean anything in particular--job titles will vary by the agency. It would be better to major in a natural science or in forensic science so you could get as much lab experience as possible, but the only way to know for sure what the job requirements are is to call the place(s) you want to work and ask.
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Sure, you can email me at lisa-black@live.com, but I'm traveling and won't be able to get back to you for another week at least.
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About two pages.
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Sorry I didn't answer this before, I'm on the road. I've seen glove prints occasionally--a remarkable number of burglars don't bother to use them. But I've never compared the prints to a particular glove because by definition gloves are mass produced and therefore not unique like fingerprints. I've seen ones from cloth gloves, which will leave the knit pattern behind, or latex gloves which will sort of look like a group of random bubbles crammed together.
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The requirements are whatever your employer says they are (same with your job title). DNA analysts are often required to have a PhD in genetics. At the coroner's I had to have a BS in one of the natural sciences. At my police department they only require a high school diploma, but give extra points for advanced schooling so we all have BSs.
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I'm sorry, I wrote a whole answer to this but somehow it didn't post. It may, depending upon how much different from real blood the fake is, for instance if it's significantly more or less dense. But in terms of fluid characteristics it may not change it enough to even be noticeable or make much of a difference in the final analysis.
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It can be hard to get into any job when you're first starting out, but it depends on so many factors--what kind of position you're looking for, location, competition. An internship can help a lot as well as lots of hands-on classes in school. Best of luck.
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According to a little chart I have tacked up above my desk, livor mortis sets at about the same time as complete rigor mortis, so it could be possible. But you really need a pathologist to answer that.
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I really don't know--I suppose it's possible but I don't know how urinating on it would affect it. I also don't know why one would urinate on a towel. And it sounds like you're trying to find an innocent explanation for your girlfriend's parents on the occasion of her unexpected pregnancy. Either way,, good luck.
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Whether a surface is soft or hard wouldn't affect the presence of lividity or rigor mortis, they would develop regardless. It might affect the pattern of lividity (whiter at the pressure points).
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The average autopsy takes 1 to 4 hours.
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I don't know what you mean by that--DNA is DNA. Samples being switched is one situation, and contaminated is another. Obviously the situation would have to be remedied and the samples re-analyzed. Questions will probably be a combination of general interview questions such as 'what are your strengths' and questions about your specific training and experience in forensic topics. Good luck!
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DNA and digital forensics will continue to grow in terms of technology and attention.
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Again that depends entirely upon the circumstances. If someone is shot from a distance, then the clothes aren't going to tell you anything. If someone gets close enough to leave their own blood or their hair on the clothing, then they might.
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Email me at Lisa-black@live.com and I’ll send answers.
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I'm sorry for your loss. It depends on what you mean by 'record.' You shoudl be able to get a copy of the autopsy report from the Medical Examiner's or Coroner's office. You can get a copy of the police report from the Records department of the police station. I don't know if you could get a copy of all the detective's notes, which would likely be just a few jottings in a notebook, or any notes that they took while speaking to witnesses, etc.--that may vary by department/state. You may have to make a public records request through your city hall, and notes, witness statements, etc. may not qualify as 'public record.' Again, this varies by location. And, speaking from experience, I'm sure it hurts that the detectives are blowing you off, but they are not doing it because they're hiding something or because they don't care. A great many people kill themselves (this came as a major surprise to me when I started in this field) and very, very often family/friends don't want to accept it and insist that it couldn't happen. They are figuring that if they give it some time, acceptance will come. Best of luck to you.
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You have to have good attention to detail, can work under stress and unpredictable circumstances, be patient and cautious.
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That's an excellent question but you need an anthropologist to answer it. I'm afraid I don't know. Sorry!
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Examination of the heart would be done at the autopsy by a pathologist, and since I'm not a pathologist I'm afraid I cannot address your first question.
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From live people we usually take a buccal swab from the inside of the mouth. From a deceased person, we can use any part from which we can extract DNA, such as blood, bone, teeth, etc.
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That every day is different.I don't like after-hours calls. I didn't have a minor. As many science classes as you can.
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When i go to a party people want to talk to me. That never happened before. Otherwise, it doesn't, except for the obvious scheduling/overtime problems.
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As far as I know, the chlorine bleach alone will do it.
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Whatever you’re scheduled to work—depending on your agency’s setup you might work 8, 10, 12 hour shifts, maybe plus overtime call-outs.
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From an object? Sure, if you clean the surface thoroughly.
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I'm sorry but I wouldn't have any idea what an HSC exam is or what a good score is.Best of luck to you!
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Probably not. Fingerprints are left usually because skin has oils and sweat, which of course gloves wouldn't have.
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I'm afraid those questions are much to broad for me to summarize here. See if your library has copies of Richard Saferstein's Forensic Science Handbooks or his smaller volumes on forensics.
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I don't see why as that would be perfectly legal.
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Sure, email me at lisa-black@live.com.
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There's only two kinds of blood, blood and menstrual blood, and as far as I know there's been no studies using menstrual blood.
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Yes, absolutely. Most people will have a mix of patterns on their fingers.
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Not as far as I know. I think that would be too difficult because even if you could assess staleness, you wouldn't know how fast the person smokes a pack, therefore how long the pack had been open, how it had been stored, etc.
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Over the years I've operated a Fourier Transform Infrared Spectrometer, an Atomic Absorption Spectrophotometer, alternate light sources, a photography setup, and various software programs. Venders or other employees train me to use them.
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Okay, so if I'm following this:The pathologist says he sent the hyoid to the forensic lab.The forensic lab says it didn't receive it. The pathologist report says the hyoid was intact.
It seems to me that the 2nd and 3rd statements contradict the first, and since as far as I know pathologists and not labs examine hyoid bones, my guess is that the first statement is an error, either a typo or a misstatement and the bone was never sent to the lab. The only way to know for sure is to ask the pathologist. Just call the ME or coroner's office and ask for an appointment to come in or to phone in order to ask that pathologist a few questions about the report. Such offices are usually very careful to make a family comfortable so I'm sure they will be willing to address your concerns. Best of luck!
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I'm sure that depends on what material the pants were made of.
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That depends on what agencies mean by the title 'forensic biologist' and what your job duties would be. The only way to know that is to contact them and ask. You can also check websites of forensic organizations such as American Academy and the International Association for Identification and look at their job postings. That will give you an idea of requirements for different positions.
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I haven’t worked any really crazy ones, and sorry but any semi crazy ones would take too long to explain.
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That depends on what job you're applying for--does it entail more lab work or more scene work? The only way to know for sure is call the places you might want to work and ask, or at least check out job postings online.
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Inside a fresh body bag that's zipped up.
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If you could possibly create different colored filters for your camera with transparent, colored films? That might enhance the writing. That's all I can think of, sorry!
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see question above.
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I like doing both, because being in the lab all the time can get tedious, but being at crime scenes all the time can get exhausting.
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Sorry, but as I'm not a DNA analyst, I wouldn't have any idea.
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I got a little queasy at my very first autopsy, but since then, no.
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When I was at the coroner's office, a typical day would be examining victim's clothing from a homicide or suicide, typing blood samples and testing gunshot residue samples. Now at the police department, a typical day is spent in front of the computer putting in latent prints that the officers or I have lifted from items and searching for a match, or checking past searches of new people put in the system. Then I might go out to process a burglary scene.
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I'm not an expert in that particular aspect, but I know from experience that it will make a big difference if the area was continuously frozen as opposed to freezing, then thawing, then freezing again and so on. If it was continuously frozen there might not be too much decomposition at all. If it freezes and thaws continuously then it could be quite decomposed, especially if its not covered with anything like dirt or even leaves. Plus under those circumcstances I would expect a lot more animal activity.
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This may vary by county or state, but I am not because I'm a civilian employee and not a sworn officer.
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No, because those fluids would not contain acid phosphatase.
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Sure, email me at Lisa-Black@live.com
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Changing the ambient temperature either up or down and then changing it back will affect a pathologist's estimate of time of death because they usually take that into consideration. I couldn't guess how long it would take it to unfreeze, but at room temperature I would think several hours at a minimum.
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I'm sorry but I really don't know.
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I'm afraid I wouldn't have any idea. Call your local crime labs and ask their personnel for suggestions.
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I'm sorry but I don't know. A DNA testing company can probably help you. Best of luck!
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Sure, I'll email you.
I just tried to email you and it came back undeliverable. You can email me at lisa-black@live.com.
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Unfortunately I can't really discuss that on a public forum. And they're all weird, in their way.
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I'm sorry but I wouldn't have any idea. You'd have to ask an anthropologist.
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I have no idea. You'd have to ask the review board. Since statistics are just numbers, how do you know it's not included?
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Well, if it's found on the victim, you might ask if it came from the suspect's clothing/upholstery/etc., and vice versa. Or it could similarly link either party to the crime scene, depending upon the circumstances of the case.
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It’s not easy to get a job in this field—there’s a lot of competition and staffs are not as large as you might think. The best thing you can do, after graduation if not before, is get an internship somewhere to get some practical experience and meet people. It will also help if you’re willing to relocate.
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I really don’t know, since my degree is in biology, not forensic science. You should ask one of faculty advisors in the forensic science program at the university (or better yet several universities). You could probably just call the departments on the phone and ask.
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I'm so sorry for your loss! However I doubt I could tell you anything more. I believe it's impossible to tell exactly what physics will take place. If you'd like, email me at Lisa-black@live.com with your details and I'll see if I can give you any opinions that might help.
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Get everybody out of it, and then take pictures.
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That would depend entirely on the circumstances and method of murder, wouldn't it? If they are such that it would be impossible for the person to have died by accident, suicide, or of natural causes, then murder would be suspected.
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Usually, as far as I know, the detective is in charge of the investigation. The CSI doens’t work for them but is there to provide technical support and advice, but ultimately, the detective has the final say. And unlike TV, the detectives are interviewing witnesses and deciding who to arrest. Best of luck!
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Our office gets journals from the American Academy of Forensic Sciences and the International Association for Identification, as well as smaller publications like newsletters for the Florida Division of the IAI and the one for the association of Bloodstain Pattern Analysts.
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Most people die in their homes, so that's the 'normal' place to find them, but there are plenty of more unusual incidents as well. It's never scary, though, since when I go there I'm surrounded by cops, EMS workers, possibly firemen, Medical Examiner staff etc. I always observe the body where it is found, since that is my job. The Medical Examiner's or Coroner's office staff examines the body at their lab, so they can choose to come to the scene or not. If the death appears to be straightforward and natural, they will often not come to the scene and simply have the body transported to them.
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I have no idea. It could be either. It doesn't matter how many times they were shot. As far as I know it would only matter if their eyes were open or not at the moment they died, not what happened before or after they died.
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A 'forensic science technician' can refer to anything from someone who works in the Property Department to someone who does DNA analysis to someone who investigates death scenes. A good way to get a handle on the situation is to look at online job postings from places where you might want to work--the local police department, the county morgue, the state crime lab. They will post the duties and requirements for each position. You can also check the same information on the websites of professional organizations such as the American Academy of Forensic Sciences or the International Association for Identification. That should give you a good start.
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Generally bodies in the water decompose more slowly than bodies exposed to air, but more specifically than that I cannot tell you. I did find this: https://digital.library.txstate.edu/handle/10877/4078
It's really a pathology question and not my area. Also colder temperatures will cause slower decomposition than warmer temps.
I definitely can't answer your second question but also, are you asking a) how long the person lived as a sailor b) how long the person was in the water before the hand was cut off or c) how long they might have survived in the water after the hand was cut off (assuming they had no access to a tourniquet and such like)? If you could locate someone who worked as a ship's doctor they might be a big help.
Best of luck!!
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I'm sorry but I wouldn't have any idea. They didn't even have forensic science degrees when I went to school.
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Was she washed up out of the water or found on a dock or something? In the first case it wouldn't be interpretable because you can't know where the body was when rigor set in. In the second it might indicate that the body had been moved if the hand position wasn't consistent with where the body was found. I don't know what you mean by 'refreshness'. Stomach contents can help a pathologist estimate how long it had been between eating and time of death, though of course everyone's digestion rate is a little different. I hope that helps!
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I have no idea. You'll have to ask the agency to which you are applying. They may all have different requirements.
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Gunshot is the most common, then bludgeoning, then stabbing.
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Not much free time, no. There's always work to do.
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Being 'on call' and knowing you can be interrupted at any moment of the day and have to go to a crime scene, even if it's the middle of the night or a holiday. Having to get up once or twice during the night after working 10-12 hours and knowing you have to work those hours for another day or two is pretty disheartening. I've also had to change vacations because I have to testify in a trial. I hate that.
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First of all, no teacher should ever tell you you're 'not smart enough' for a field.
Second, not all forensic work involves a great deal of biology--really only DNA analysis and serology do. Toxicology will require a good chemistry background. But specialized fields such as latent prints, crime scene investigator, questioned documents, digital evidence, ballistics and impression evidence would use little to no biology.
If a formal degree becomes a problem, you might want to see if you can start out in an Evidence/Property area and work up from there.
Best of luck!
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I'm sorry I can't help but that's a pathology question. I do not know.
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I think it's unlikely that there wouldn't be any injuries, but I'm afraid I couldn't tell you. You would need a pathologist for that.
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Gunshot residue can actually refer to two things, gunpowder that flies out of the barrel with the bullet and can land on the victim, and primer residue that can leak out of the back of the bullet cartridge and spray out onto the shooter's hand. But it can also get on the gun or nearby surfaces or people so presence of it on hands does not prove someone fired a gun, and it can wipe off easily so absence of it doesn't prove they did.
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I'm afraid not. I'm guessing that would depend entirely on how large the bandage is and how much the person bled. Best of luck!
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She should try to get an internship with a local agency--city, county, state police or medical examiner's. Practical experience will count for a lot. However much depends on what kind of forensic scientist she wants to be--does she want to do crime scene work, in which case most of the training is on the job, or does she want to work in a lab, in which case she'll probably need at least a BA in biology or chemistry. She can check forensic organization websites and government websites for job vacancy postings to get an idea of what the job requirements are. She might also check out entry level positions. At our department we have PSA--Public Service Aides, a paid position that's basically a step between community volunteers and sworn officers. They do more cop-type things, but will make contacts and learn a lot. They do things like direct traffic at accident scenes, take burglary reports and process scenes for fingerprints. She might also want to consider that forensic positions involving crime scene work often have unpredictable hours and sometimes overtime, which might be difficult to juggle with child care arrangements.
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It can be very stressful at times when unexpected overtime or court interferes with life plans, and at times when we are exhausted/hungry/have five detectives all wanting different things at once. But I just focus on the job what needs to be done right now and looking forward to a shower and bed. No, the job is about what I expected.
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The only areas of the body with friction ridges are the palms and fingers of the hand and the soles of the feet. They could not possibly be found on gloves. I don't know if there's a paper that states that...it's kind of like finding research to say that an apple is not an Orange. However if you search 'identifying glove prints ' you could probably find what you need. Best of luck.
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Yes, I'll email you when I'm back at work tomorrow.
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The vast, vast majority of people who kill people didn't plan to kill someone, so they often leave fingerprints, blood, witnesses, text messages, and then come up with some sort of story that sounded good in their head but wouldn't fool a 6 year old.
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Not that I'm aware of. Are you sure they were destroyed? Or simply not located at that office?
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Any kind of lab work, lab courses or internships in laboratories or with the criminal justice system.
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Go to a college that offers a degree in forensic science. Each college or university should have a website where they list the degrees they provide.
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I would guess in his lap or to his right, but it's impossible to know for sure, since you cannot know exactly how the body was positioned or how powerful the load of the bullet might have been.
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I don't know, but it could depend mostly on where the sample was sent and what their backlog is. Some state labs might have a bad backlog. It could also depend on how they prioritize samples.
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I use it the way you use your computer without writing code. I have chemicals that I use to process for prints, but we just purchase them. There are a few reagents we mix ourselves. At the coroners office we mixed almost all ourselves. A toxicologist, on the other hand, would use it every day.
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No. Much blood will drain from all the cutting done during the autopsy, but no attempt is made to particularly remove it.
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No, just attention to detail and patience.
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Yes, the arcsin of the width divided by the length of the stain will give you the angle of impact at which the blood struck the surface (usually a wall). The direction of the stains can be traced back to a point of convergence and from there the angles can be traced back to a distance from the wall, giving you the approximate point in space where the blow was struck.
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Barring any bizarre circumstances i would think they have only been dead for a short time. But that's really a pathologist's question.Hope that helps!
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As I'm not trained in digital forensics, I'm afraid I wouldn't know. PS the purpose of this website is not really so that you can cut and paste your homework and get other people to do it for you.
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That depends on what you want to go into. If you want toxicology, go with chemistry. If you want serology or DNA, go with biology. If crime scene, general forensic science.
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I wouldn't have any idea about that.
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It almost certainly would not be a deal-breaker. Just tell them the truth.
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Yes. It's not common, but prints have been lifted using superglue or the more recent RTX. The best areas would be those that are smooth, clean and largely free of hair.
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At it’s most basic, a trajectory is just geometry. If you can find two fixed points then you can draw a straight line between and beyond them.
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Yes. I've never heard it mentioned that certain things don't show up until later.
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That depends on what you want to do. Call labs that you're interested in working for or peruse job opportunities postings at the major forensic organizations websites and see what they require.
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As far as I know that shouldn't happen because functions stop when the person dies, but that's really a question for a pathologist. I also don't know if swelling, depending upon where it is, might happen as a result of the hanging. Sorry I can't be more help.
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At a guess, I would suggest: slash marks that are too wide for a knife, some partially healed, would indicate animal claws inflicted at different times, but none deep enough or near vital arteries to cause bleeding out. Then water in the lungs would indicate drowning, though that is not always a definite indicator. Drowning is an elimination diagnosis, as in you eliminate other possible causes.
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Cleveland State University. I have a BS in Biology.
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Usually we can assume what kind of cells will be on it depending on where it was collected from—if from a pop can, it will probably have saliva and skin cells. From underwear might have semen. If from a dark stain, probably blood. How long it takes depends on the type of analyses done and the type of DNA testing—STR, ySTR, mitochondrial, etc. It will take at least a day or two, and after that it depends on the lab’s backlog. We send our DNA to a state lab and it will take between a month and four months to get the results back. If detectives or prosecutors want it faster and someone’s budget is willing to pay for it, we can send it to a private, accredited lab and pay for a faster analysis. They can do it in as quickly as three days or up to a week or two depending on what you want to pay for. If you want it in a week it will cost a few thousand dollars—something like $600 a sample plus upcharges for expedited service and an overall charge, if I’m remembering correctly. If you want more like three days it will be more like $5000. That’s for the basic three samples—victim, suspect and questioned sample.
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For homework assignments please email me at: lisa-black@live.com.
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They might. I couldn't say for sure one way or the other.
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If you page up to the very first question, the answer goes into this in some detail.
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My guess would be no. I would think the formaldehyde would destroy the DNA in the cells, though I don’t know for sure, and in any event they weren’t doing DNA in the 70’s so you’d have to find something of the person’s to compare the eyeball DNA. If you have something of the person’s retained from the 70’s, especially hair for example, perhaps there is mitochondrial DNA in some cell in the eyeballs that could still be obtained and compared to the mDNA from the hair.Otherwise I doubt ophthalmologists would take or save retinal scans back in the 70’s. Hope that helps. Best of luck!
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I think those sound like fabulous courses for this field.
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I’m not sure what you mean—when I decided to go into forensic science (in which case it would be “that sounds really cool, like I could solve mysteries without being a cop”) or more like my very first day on the job (which would be “I hope I don’t screw up “).
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Yes. Unless they have a crime lab more incredibly equipped than any I've ever visited.
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As I am not trained in accident investigation, I wouldn't have any idea.
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I'm sorry but I'm not versed in microbiology.
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Well, you could simply say you're going to be an anthropologist, which is true--I believe you'd have to be an anthropologist first and then specialize in forensic work. They might be disapproving because they believe it will be difficult to get a job--which is probably also true. When I was at the coroner's office our anthropologist was a college professor who would drive two hours to come and consult whenever we had skeletal remains. Very few agencies are large enough to have a full-time anthropologist on staff. So you might want to have some sort of back-up plan.
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That’s more of a question for detectives, since ‘solving ‘ the case is their responsibility—I’m just there to provide forensic support. But in the cases I’ve been involved with, luck is of course a huge factor.
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Your advisor should be able to direct you. If not, then call all the crime labs in the area, city, county, state and ask them if they offer internships and how to apply.
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Sure, email me at: lisa-black@live.com
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Sure, I will email you.
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A good way to get a handle on the situation is to look at online job postings from places where you might want to work--the local police department, the county morgue, the state crime lab. They will post the duties and requirements for each position. You can also check the same information on the websites of professional organizations such as the American Academy of Forensic Sciences or the International Association for Identification. That should give you a good start.
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Sure, you can email me at Lisa-black@live.com.
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if you have homework assignment interview questions, please email me all of them at once at: Lisa-black@live.com and I’ll get back to you.
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That is difficult. An internship is the best thing but they may be scarce. First check with your guidance counselor or forensic teachers at school to see if they can help you. Then call the crime labs in your area to see if they offer any sort of intership or long-term shadowing/volunteer work. You might also check the state and local agencies--ours had community volunteers and Public Service Aides who do some crime scene work. Best of luck!
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Titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or wherever you might be interested in working and ask them. At the coroner's office we had to have at least a bachelor's in a natural science (this was before they had forensic science majors). At the police department where I am now, they only require a high school diploma but you get more points in the interviewing process for having a four year degree, so we all have one. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. Good luck.
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A background in science, patience, and attention to detail.
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Titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or wherever you might be interested in working and ask them. At the coroner's office we had to have at least a bachelor's in a natural science (this was before they had forensic science majors). At the police department where I am now, they only require a high school diploma but you get more points in the interviewing process for having a four year degree, so we all have one. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. Good luck.
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Yes, to some extent. That’s what I’m doing now. It all depends on how much staff and equipment the agency has. For instance I’ll collect items and process them for fingerprints or do preliminary tests for blood or semen, but it’s unlikely that a DNA analyst would also be doing crime scene work.
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That’s a good question, because there is no hard and fast rule—your title is whatever your boss says it is. A CSI may work only at crime scenes or may also do any office or lab analysis as well, it depends on how big the unit is and how work is distributed.
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I have no idea. They didn't have forensic science degrees when I went to school. But I will check with a friend of mine who teaches.
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Nothing that is nationally famous.
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Sure you can email me at lisa-black@live.com
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Oh, sorry, for some reason I thought you meant that the guy had done it himself. In that case it is quite possible of course. The scene would be very bloody, of course, with all those injuries. The bodies would bleed out but probably more from gravity than from the heart pumping because they would have died so quickly. (At least I’m assuming the attack was over quickly.) The heart is about the size of the person’s fist and, obviously, would be blood covered after removal. A brain is grayish white and convoluted and other than some blood smears would look fairly neat, if the entire thing was removed carefully as one would at an autopsy. The killer would need a scraping tool and the expertise to do that. Otherwise it would probably look pretty mangled, but still largely a grayish white color.Hope that helps!
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It all depends on where you want to work and what they require. At the coroner's office we all had at least a bachelor's degree in a natural science like biology, because there were not any forensic degrees then. If you want to be a DNA analyst you will probably need to major in genetics or biochemistry. At the police department where I work, with our very small lab, we are only required to have a high school diploma--but you get extra points in the interview process for advanced degrees so we all have at least a bachelor's.I don’t know how helpful medical technology would be because that is specifically geared toward a different profession.
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I would expect it to be like any other interview--they will ask about your education and experience. If there is any practical experience you have, such as lab analyses, fingerprinting, what programs you used, they may ask specific questions about that such as which software did you use, did you use a mass spec or an electron microscope, etc. If there's things you haven't done, you might say you're aware of the theory of, say, bullet trajectory analysis but haven't had any hands-on experience. That's perfectly okay, no one is an expert in everything. Best of luck!
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The rape kit will only show biological evidence of another person besides the victim. Bruising, injuries and testimony will be used to determine whether it was consensual or not.
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Sorry, I'm having a hard time picturing how what you're describing would be possible.
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Sure, email me at lisa-black@live.com
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Because fingerprints, tire tracks, footwear impressions and sometimes handwriting can, with sufficient individual characteristics, be identified to a specific person or item. (Glass can as well in the case of a 'jigsaw' match, when it physically fits into a piece of evidence.) These analyses require human attention and thorough training and competency and are not quite as simply done as adding a blood sample to a thermocycler for DNA analysis. Explaining DNA analysis takes a highly trained analyst but the actual process is largely automated.
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It may depend on how fresh the stain is and how fresh your reagents are. Plus just becuase something fluoresces does not mean it’s semen (see answer above).
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Every agency will have their own requirements depending on the position and their preferences. For crime scene or to work in an evidence dept, a criminal justice major may be fine. If you can find a forensic science program that may be great. There is no one answer because it depends what positions they have at each agency.
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I'm sorry but I've never worked in toxicology.
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Sure, I'll email you.
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I'm sorry but that's beyond my technical expertise. You need a toxicologist for that one.
Best of luck!
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I am not sure that it would be possible to detect freon, particuarly the type of freon, as I have no idea what instrumentation would be used or its limits of detection or what effect contact with live or dead would have on the compounds, whether it would tend to react with them or not. I do think it's highly unlikely they would look for that as they would most likely, after the prints had been developed and photographed for the ridge detail, swab up the prints and test them for DNA from the person who left the prints. That process would be designed to detect DNA and nothing else. I suspect these results would come from a magical movie 'Batcomputer' that can tell you every single thing about anything on the planet you drop into it.
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For school projects please email me at: lisa-black@live.com
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Take all the science courses you can and visit labs that do the kind of services you’re interested in.
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Sure, I'll email you.
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Take as many science and then math courses as you can.
Best of luck!
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titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or whereever you might be interested in working and ask them. At the coroner's office we had to have at least a bachelor's in a natural science (this was before they had forensic science majors). At the police department where I am now, they only require a high school diploma but you get more points in the interviewing process for having a four year degree, so we all have one. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. Good luck.
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DNA is genetic material. Substances that contain cells that contain DNA, such as blood and sweat and saliva can have many other substances as well, but a crime lab would likely only look for DNA.
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I'm not trying to be snippy, but no, I really can't. 'Forensics' could be anything from having a PhD in genetics to working in evidence intake. Start with why you're thinking about it as a career, what it is you see yourself doing. Then try to find facilities near you that do that and ask for a tour. It's a good way to get specific answers to specific questions as well as begin to make contacts in the field.
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Titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or wherever you might be interested in working and ask them. At the coroner's office we had to have at least a bachelor's in a natural science (this was before they had forensic science majors). At the police department where I am now, they only require a high school diploma but you get more points in the interviewing process for having a four year degree, so we all have one. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. Good luck.
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Good question. If the surface isn't disturbed and the temperature and humidity are cool and steady, I know fingerprints can last indefinitely, so I suppose skin cells would last as well.
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Most likely.
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That’s hard to say. It depends not only on how old the stain is but how old or how sensitive the reagents are. I’ve had old known semen stains not react with relatively new reagents so it is possible.
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So the victim was killed and put in a freezer, then moved to another state and put in another freezer? I have no idea how that would be figured out, unless they leave some compelling clue frozen with the victim.
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In the way of helping to solve crimes.
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I couldn’t. I don’t know if a pathologist or biologist could.
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You can cut off a sample of the tampon or sheet (if you don't want to cut a hole in your sheet, just take a clean cotton swab, dampen with water, and rub on the stain until some of the stain transfers...do that before you wash the sheet or it probably won't work well). Let it air-dry, if necessary, and package in a clean envelope. Then rub a clean cotton swab on the inside of your own mouth for your own standard and seal in a separate clean envelope. Don't put anything in plastic. You should be able to get those tested at a lab, such as LabCorp, though it might take some explaining since they usually do parent-child comparisons. This will cost you anywhere from $250 to $600, according to their website. Of course all that will do is tell you if the blood is yours. It won't tell you whose it is. PS if it's a tiny amount on the sheets it could also be from him--shaving nick, shin scrape, that sort of thing. We bleed a lot more than we realize.
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I'm sorry but that's a very broad question. What kind of pattern and impression evidence are you talking about?
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Bleach will also destroy DNA but of course that may damage items. Soap and water will do.
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Sure, I'll email you.
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Sorry for the late response--sure, email me at lisa-black@live.com.
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Sorry for the delay, I’ve been on vacation. I guess it depends where the activity took place. If it all took place in bed and they washed the sheets, then there may not be any to find. An alternate light source can look for possible spots of semen, but the problem is many things can fluoresce, such as vaginal secretions, sweat, saliva, cleaners, certain fibers, etc.
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I"m sorry but that's a question for the website administrator.
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Yes, soap will take care of it.
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Stay in school and take lots of science courses. Scholarships would be offered by different schools and/or organizations. What land are you in now?
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I would guess that you should major in biology and minor in forensic science. I don't believe that a general forensic science program would be specific enough for a biologist job. But you should check want ads to see what they require.
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I apologize but I have absolutely no idea. I suspect there may not be a difference.
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No.
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I"m sorry, I know I posted an answer to this question but apparently it disappeared into cyberspace. As far as I know, no, it wouldn't be possible. The DNA results would show a mixture so that you could say 'it could be a mix of these two people, meaning there's no alleles that could NOT have come from them' but you couldn't positively state that it is a mixture. And it wouldn't be possible to tell which came first as the sample is put in a liquid medium and mixed to analyze.
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I'm sorry but I don't know what a community health service course is, but I would think any information about the medical field would always be helpful.
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I have never done an autopsy, as I’m not a doctor. I’ve attended many, many autopsies, and they generally take about two hours, but can go up to four or five if there are a lot of injuries. At that point they will be done with the body, but the autopsy report can take much longer depending on if they have to send out samples for toxicology analysis (most places do) or have to wait on some other kind of specialty report. In one case I remember we had to wait a long time for a pediatric x-ray analysis. That can be weeks to months depending on who you’re waiting on and how big their backlog is.
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They would most likely have rope fibers on their hands whether they hung themselves or were strangled. No, the furrow will usually get less deep and maybe disappear, depending on how tight the rope is, toward the spot where the knot is since it is usually higher up on the body as gravity pulls the body downward. As far as I know the location of the knot will depend on where it’s tied, if it’s slid around before suspension occurs, and the structure of the knot (if it slips or not). Being right or left handed shouldn’t make a difference therefore.
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I'm not trying to be snobby, but first of all it would be very important that you can communicate in English, with proper punctuation.
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Just apply for it. Check the websites of your local city, state, county police agencies and see if they have a position posted and what the requirements are. You can also check www.aafs.org and www.theiai.org for national postings. Best of luck!
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Many forensic chemistry departments only analyze possible drugs, so I would think it would be possible to find.
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I have absolutely no idea. I asked my coworker (who does digital forensics) this one time because I wanted to get rid of some old phones, but she didn't know either. I smashed them with a hammer and then soaked them in my pool for about ten minutes, but of course I have no way to know if that completely worked.
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Sorry it took me so long, I was out of town at a conference. But I really don’t know for sure—it’s up to the hiring lab, what they want. I would think a 4 year in Biology with as many Forensic classes as you can get would be best, but a better way to guess would be to call all the labs you’re considering and ask them.Best of luck!
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No, I can't say that they do.
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No.
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Most any job in forensics is hands-on, either lab work or field work or both, and legalities are usually the responsibility of the officers, who are trained in such, and the attorneys. So I don’t think you’ll have a problem. Best of luck!
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The 'forensics industry' encompasses at least twenty different areas, from pathology to accounting, so any certifications would be administered by that disciplines organizing body. Fingerprints, for example, are regulated through the International Association for Identification. Death Investigators have their own organization. Whether or not these certifications are required for your job is up to the agency (such as your city police department or a county medical examiner's office) hiring you for that job.
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As far as I know germs don’t ‘eat’ other germs. But they can’t live long by themselves so on an inanimate surface, they would die sooner rather than later.
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But what sample were they testing? What piece of evidence were they analyzing in the gas chromatograph?
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Possible for what to appear self-inflicted?
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I think it would certainly be an asset!
Best of luck.
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Hi, sorry I didn’t get back to you sooner. Again, titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or whereever you might be interested in working and ask them. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. Good luck.
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32. It was my second career, I majored in political science during my first round at college and was a personnel secretary for ten years first.
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Hi Cybill, I'm sorry I didn't get back to you sooner. I believe that they can use the inside of a tooth for DNA analysis, but of course if the tooth is loose they may not be able to determine which body it came from if there's more than one. I expect a dentist would need the teeth still in the jaw to compare with dental x-rays in order to make a comparison that way, but it may all depend on what work, if any, has been done to the tooth and how distinctive that work is. I'm not a DNA analyst (any more) or a dentist so I'm not 100% sure.
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Most people are cross-trained in more than one area. In smaller agencies people might have to wear a lot of hats.
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I'm sorry, but again that is way too broad a question. Most forensic science is based on biology, physics and chemistry, so it's all 'natural' science.
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I’m so sorry for your loss. My advice would be to use rubber gloves and take the items to a porch or some dry outside spot if it’s not going to rain for a while, or the garage or utility room if so. If you’re sensitive to smells you might use swimmers nose plugs or a bandana tied over your face. Spread the items out on a clean paper bag or newspaper (or wax paper if there’s some pieces of paper in his wallet you want to keep. Anything that can be wet, like car keys or plastic cards, dip or wash them in a container of water with some bleach in it, then let dry. Let all the stuff in the wallet dry if necessary, then keep what you want and discard the rest. Some of the smell will dissipate the longer its left to dry but if it’s something that can’t be soaked in bleach, you may never get a smell completely out, as far as I know. Best of luck.
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That determination is made by the pathologist doing the autopsy, and there are a number of ways--body temperature, rate of decomposition, rigor mortis, but it will be an estimate, not the precise number that you might see on TV. All those things can depend on the environment where the body is, temperature, exposure, physical characteristics of the victim, medical conditions etc. Entomologists can help if there is distinct bug activity at the scene as well.
Hope that helps!
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What was it they were testing?
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Sure, email me at lisa-black@live.com.
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titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or whereever you might be interested in working and ask them. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. Good luck.
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I think that depends entirely on where you live or want to work. If you intend to apply for lab or crime scene work in a large city, then no. If you're going to work crime scene in a remote area with a lot of outdoor scenes and animal activity, then maybe yes. Regardless, an internship at your local forensic facility would be better. If that's not possible, at least call them and ask for their advice.
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If the bottle is sealed well, I don't think so. Hair is pretty tough.
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Go to college and major in forensic science or one of the natural sciences. Best of luck!
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It depends on what you're talking about--was what contaminated with what? Lots of things can be contaminated with things without results being affected. Take blood, you can mix blood with paint or dirt or maybe oil or types of soap and that won't affect the DNA profile. If you mix it with bleach or other blood, it will. So if you had, say, heroin, and it gets mixed with fingerprint powder or cotton fibers, it's still going to test as heroin. If you mix it with cocaine, maybe it won't. (Controlled substances are not my field.) So 'contamination' is not a one-size fits-all word.
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I’m sorry but I have no idea. I’ve never worked in Toxicology.
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That's called the 'CSI Effect' and it can be a problem for juries to have unrealistic expectations. One instructor described it as "Juries don't know as much as they think they know, but they really do know a lot more than they used to know."
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I’m sorry, no. I don’t feel qualified to do that.
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Biology would help with the natural fibers (like cotton or fibers from plants, or hairs from animals like wool) and chemistry helped with analyzing synthetic fibers with polarized light or fourier transform infrared spectroscopy. Those last two don't work on natural fibers because they're not consistent all the way through like a synthetic fiber, that comes out of a machine.
Fiber analysis was usually only examined in cases of stabbing, strangling or bludgeoning, where there had to be close physical contact between victim and suspect. (A gunshot didn't mean there had to be contact.) It was only a small part of my days. Very little is done any more because you can only say the fibers are consistent with having come from a particular sample, you can't say they did, as in DNA or fingerprints. You can't even give a statistic for how likely it would be to find a particular fiber unless it came from the suspect, etc., because we can't know how many items with that fiber are in the environment.
Only collection would be done in the field, to do anything more you would need the microscopes and the equipment at the lab.
Hope that helps!
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Sorry, but I really don't know. You'd have to ask a pathologist. I imagine it might depend on how long after death the person was in the water.
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Bodies begin to deteriorate immediately, but the process might progress more slowly or less slowly depending on temperature, humidity, exposure or any medical conditions of the victim.
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That’s an exceedingly broad question that could take a stack of textbooks to answer.
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Sure, email me at lisa-black@live.com.
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As far as I know, no. The DNA tests of the shirt will just show a mixture of the victims, so that the analyst would only be able to say the blood could have come from these two or three people--in other words there are no alleles that definitely couldn't have come from those three. But because it is a mixture, they can't say it did come from these three exact people. And they couldn't tell, again as far as I know, which blood was deposited first.
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I don't see why not!
Best of luck.
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With hairs, you can’t identify one to a specific person with only microscopic examination—the main reason it is hardly used these days, and typically only as screening to decide to do DNA analysis. Then DNA analysis is actually done on the skin cells clinging around the root, because the actual hair doesn’t have any nuclear DNA. It does have mitochondrial DNA though few labs can do that.Fiber analysis is also rarely done these days because it can’t be positively identified to an article of clothing, or is it possible (usually) to find out how many of that article had been manufactured or sold and who they were sold to, etc. An analyst can say the fiber is consistent with coming from that article but that’s all. Unless there is a ‘jigsaw match’, a section of the material found that can be fit back into the article of clothing like a puzzle piece.Hope that helps!
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No.
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I would try oblique lighting—try laying the piece down as flat as possible and then hold a flashlight to the side so the light beam travels across the piece instead of down onto it. Adjust the light to where it’s the most helpful. With the ziploc bag you might also put a piece of dark paper inside it to increase the constraint. That’s all I can think of since I’m not an expert in questioned documents. Best of luck!
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I'm so sorry but I don't know. I'm not trained in digital forensics.
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Automatic access to a national fingerprint database. Even though you see it on TV every day, it's not really possible for police departments. At best we are tied into the state database, but not any sort of national or international one, at least not without a lot of hoops.
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Alas, I really don't know. I think it depends on many cirucumstances, the temperature, the pH and the humidity. I can tell you that covered corpses break down much more slowly than those exposed to air so there's a good chance, if the environment was somewhat cool and dry, that there would be a good amount of flesh left on the body. If the environment was hot and humid, it might be completely decomposed into inches of sludge. Hope that helps.
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Fingerprints develop randomly as a child is moving around in the womb before birth, so they are not dictated by genes. That said, there can sometimes be vague similarities among family members (like having radial loops, all arches, or whatever). There are three patterns, loops, whorls and arches, and you can easily have some of your fingers have loops and then a few have whorls, or they can be all one type, or any combination.
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I see, but I still couldn't say. It depends entirely upon the hiring agency and what kind of pool of applicants they typically have--basically, who they have to choose from. There will be a basic set of requirements but after that, advanced degrees are better than high school diplomas, degrees from accredited schools better than non-accredited, internships at forensic agencies very helpful, etc. The best way to know is to call the places you would like to work at and ask them. If you can get a tour of their facility, even better, then you can gently ask the people who work there where they went to school and so on. Shorter answer: It won't automatically get you in or automatically keep you from getting in. Of course it certainly couldn't hurt. Best of luck!
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If you want to be a pathologist you will have to be a doctor, and will need to go to med school. So you are looking for a pre-med program. Best of luck!
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Contamination may make it impossible to get a DNA profile, or the profile might show a mixture. It will not cause a profile to look like someone else's DNA. Or it may have no effect at all. It depends what is contaminated with what.
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You would need another forensic pathologist to review the work of the first forensic pathologist.
Best of luck.
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It is scientific information applied to matters pertaining to the law. And what you major in depends on what area you're going in to--pathology, toxicology, entemology, etc.
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I’m sure it depends on what you want to do (lab work or field work) and what’s required. You would be better off talking to your local forensic lab to see what kind of things they do. Most likely the daily work of a forensic lab does not really involve exquisite chemistry. For my part, I was an ace in general chemistry but I never really ‘got’ organic chemistry. Best of luck!
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I used to be the hair and fiber analyst. Unfortunately it's increasing rare to find fiber analysis done at labs. Perhaps I can help you.
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I’m not a pathologist but I think it’s possible even if not likely. Bodies start to stiffen in 1-2 hours but rigor reaches its peak somewhere around 12 hours. It can depend a great deal on temperature, body type and medical conditions.
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Sorry, but I’m not trained in digital forensics. I have absolutely no idea.
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My guess would be 0.Mostly it’s just kids wanting me to answer their homework questions.
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Again, titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or whereever you might be interested in working and ask them. At the coroner's office we had to have at least a bachelor's in a natural science (this was before they had forensic science majors). At the police department where I am now, they only require a high school diploma but you get more points in the interviewing process for having a four year degree, so we all have one. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. Good luck.
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Yes. I don’t know if it’s actually from the poop or from the skin cells sloughed off on it, but you can.
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I'm sorry but I have absolutely no idea. You might call the labs at which you'd like to work and ask about the positions you'd like to get, and see what they suggest. They would know a lot more than I would.
Best of luck!
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Large paper bag. Casting agents usually warm up so that might create moisture inside a plastic container or bag. A cardboard box might be good as well to give it enough support to keep it from cracking.
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Again, titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or whereever you might be interested in working and ask them. At the coroner's office we had to have at least a bachelor's in a natural science (this was before they had forensic science majors). At the police department where I am now, they only require a high school diploma but you get more points in the interviewing process for having a four year degree, so we all have one. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. Good luck.
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Sure, email me at lisa-black@live.com.
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I believe it’s a presumptive test, so it would not be considered ‘conclusive’ evidence, only an indication that further test (like DNA) would be appropriate.
I have never used an orthotolidine test, unless that’s the reagent in the Hemastix test strips. We used those a great deal at the coroner’s office—they’re very handy, but can have false positives. Deciding what reagent to use will always be a function of ease of use, possibility of false positives and false negatives, expense and hazards (such as carcinogenic properties).
Best of luck!
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Again, titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or whereever you might be interested in working and ask them. At the coroner's office we had to have at least a bachelor's in a natural science (this was before they had forensic science majors). At the police department where I am now, they only require a high school diploma but you get more points in the interviewing process for having a four year degree, so we all have one. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. Good luck.
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The people to ask would be the people hiring forensics personnel in LA county. All agencies (the police department, the sheriff's office, the medical examiner's office) should all have websites that post current job openings. If they don't have any current postings, then you can always call them and ask. That's the only way to know for sure. Best of luck!
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Wow, that's kind of hard, possibly because we in forensics don't 'solve' cases, the detective does. We provide them the information that hopefully solves or helps to solve the case. Some that took a surprisingly short time: we had a would-be rapist drop his wallet at the scene. I recently had a burglary/arson/car theft in which I had some decent fingerprints, but they didn't match anyone in our city database. The detective had no leads at all and no idea where the car was. Then as is routine I checked the prints against the neighboring city's database, and got a hit, they questioned the suspect and he confessed. In my small town we often have the killer waiting at the scene and telling us that they did it. However, after sitting in jail for a while they may decide they were justified, so the legal trial may not even begin until 2-3 years later. One that took longer: we had the brutal double murder of a woman and a young girl in 1989. Despite a copious investigation of every friend, acquaintance, fingerprint or hair involved, no leads. Then two years ago a man was arrested on a relatively minor charge and his DNA was searched and hit on the unsolved murder. Hope that helps!
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As I’m not a toxicologist, I’m afraid I’d have no idea. Sorry!
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Huh...that's a tough question. Nothing really stands out...everything is a little weird in some ways but not incredibly so. Perhaps the most unusual thing I ever had to examine was a safety harness from a window washer who fell 38 floors. Mostly I'm just amazed at the way people live, and the things people do to their houses. (And what they think looks good in terms of decor.)The most fun thing we had, at a homicide scene, was the homeless victim's cat with her litter of small kittens. That rivaled the litter of puppies who had a temporary bed in the master bath jacuzzi tub of a grow house.
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I don't know exactly, but I know from personal experience that bruises are strange and unpredictable. I can bump into something terribly hard and have no mark, and then have a huge bruise from some injury I only very vaguely remember. I also don't know exactly how long they take to fade, and that might also be affected by how deep they were in the first place or the physical condition of the person. Sorry I can't be more help.
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That completely depends on what kind of evidence and what analysis we’re doing.
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I'm sorry but I also can't answer that question. You'd have to ask an anthropologist.
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I’ve never had someone ask for transcripts at an interview, and I think it would be a little unreasonable for them to expect you to have them with you without warning.It will be generally like any other interview. When they ask what experience you have in forensics be sure to mention specific tests and techniques you’ve done, like superglue, crime scene reconstruction, the AFIS system, etc.
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1. Probably not in a forensics lab. I'm guessing that would require carbon dating; an archaeologist would know much more than I would. 2. Possibly.3. Depends on the backlog at the lab (could be weeks, could be many months) and how much you're willing to pay for rush work at a private lab.4. I'm not sure news releases are ever required for anything, unless there's some sort of imminent threat to the public. Sorry but I actually don't know how our public information officer decides when to issue a release or not. 5. News reporters usually come to the scene of a crime or accident when they see something going on, but it depends on how busy they are, who they can spare to go to the scene, and whether they guess this will be a useful story to them. It's entirely up to them. We have a public information officer that they can always contact to get any release-able information.
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I'll email you.
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Well, they need to be complete and accurate, but otherwise the actual English used can be pretty basic. Happily we’re not graded on our composition skills!
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You'd have to ask a pathologist, but I believe that drinking (I assume) formalin and dying of poison would not preserve the body as it would if someone was embalmed with formalin/formaldehyde. So the indicators for time of death would be the same as with any other death. But I don't know that for sure. Best of luck!
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I have a degree in biology because they didn't have forensic science degrees at that time. I would think any natural science is a good basis for the field. A friend of mine who teaches at Miami-Dade recommends Miami-Dade, of course; also the University of New Haven, and Keiser University has some good programs.
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Where ever it’s convenient, I suppose.
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There’s a wide variety of knots as people tend to use whatever they think will work.
I hope that helps.
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We work 40 hours a week but one of us will be on call during the rest of the time, when no one is at work, 24/7/365.
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Answer to both is: maybe. If she was buried in the earth over 20 years, unless the ground was always frozen or so dry that she mummified, there will most likely be only skeletal remains left. So they might be able to establish identity from dental records, medical device implants (say a pacemaker or an artificial hip), or something left in the grave with her (like an ID card). I believe anthropologists can tell from the pelvic bone if someone has given birth, but not if pregnant at the time of death. However depending on how far along the baby is, they might have their own bones present so then it would be obvious. Best of luck!
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No and no, I’m afraid. That’s more a question for a pathologist.
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I doubt it. It depends on how little it was, and if those juvenile records are sealed (they usually are) but if it didn't prevent you from joining the military I'm guessing it wouldn't affect you working in a crime lab.
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Please send me an email at lisa-black@live.com.
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Email me at: lisa-black@live.com.
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That depends a great deal on where the body is now.
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I actually haven’t seen that movie. Do you mean super bloody homicides or ones where some psycho has set up a torture chamber? (The answers would be yes to the former, no to the latter.)
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As far as I know, water doesn’t change the process of rigor mortis. The temperature of the water may speed it up or slow it down, but the process would still occur.
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I honestly have no idea. I don’ t think it would necessarily hurt you. What will be more important at hire is your training and experience—and it depends on what you want to do. If you want to be a DNA analyst you’ll probably need postgraduate degrees. If you want to do crime scene work you will need hands-on college courses and preferably an internship or two. If you want to do laboratory analysis then some sort of laboratory experience will be best. Is there a way you can present your travels as having increased your knowledge of forensics?
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Medicine. Forensic pathologists are doctors and go to medical school. So I would suggest you take every science course you can, especially biological sciences. Best of luck to you!
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Not regularly, but I’ve caught many reruns over the years.
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I have no idea.
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Once in a great while something will catch me when I’m not expecting it. But very rarely.
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Sure, you can email me at lisa-black@live.com.
What we use the most is a camera, and after that a tape measure (to make crime scene diagrams...99.9% these tell us nothing significant, but there could be that rare exception in terms of court testimony).
What is the most helpful to me is our fingerprint database to identify the unknown prints collected from crime scenes and evidence.
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Physical evidence was always extremely important. What has changed with technology is what types of evidence are more commonly examined. It used to be hairs and pollen and now it's touch DNA and cell phones.
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As far as I know it’s certainly possible to cut the entire ear off, but I would guess it would be difficult to do accidentally or in the heat of battle without causing other injuries to the face. But that’s entirely a guess on my part. I don’t know more than the basics about either Van Gogh or Gaughan or the incident. Sorry I can’t be more help!
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I think that's what I'm doing most of the time when I answer questions on this site. If you look over the previous Q&As you'll probably see a lot of homework questions.
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I used to analyze dried paint with an FTIR, which I believe would detect lead, but as to what would be better I really don’t know. Sorry I can’t be more help.
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Being on call and having to leave dinner or get up in the middle of the night to go to a crime scene. And having to schedule vacations and events around whether I can get someone else to cover my call for me.
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No, you would really need a pathologist for that. Generally, exits tend to be larger than entrances, but it depends on what someone is shot with and where. If the muzzle is very close or in contact with the body, then the entrance will likely be larger than the exit. if the bullet fragments inside, then there might be a small exit. So different factors can affect it. Best of luck to you.
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The job requirements are whatever the hiring agency says they are, so it could be anything from a high school diploma to a PhD in genetics. The only way to know is to call the department or check their website for job vacancies.
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Like any job it gets easier the more you are accustomed and practiced in what you’re doing. I have no idea what kind of IQ you need, and it depends on what you want to do. If you want to analyze DNA you may need a PhD in genetics. But to work crime scene you need only be conscientious, reliable, observant, and willing to learn. Best of luck!
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I’m sorry but I don’t know what b.com is. The best way to know is to contact your local crime labs and ask them what their requirements are.
Best of luck.
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That's an awfully broad question. What do you think are the physical and chemical properties? Blood has hemoglobin. Hair grows out of your head. Footprints are impressions in the dirt. I'm pretty sure you could write a good answer to this question yourself.
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The perpetrator could be imitating a scene from the movie “Wedding Crashers” in which they put Visine in a man’s drink to give him diarrhea and vomiting. However Google tells me that’s not what it actually does, it can cause drowsiness and can be dangerous. So the motivation depends on whether the perpetrator knew what the actual effects would be or not.
As far as detecting it, it’s apparently in the imidazole family which includes histidines, so perhaps a chemical lab could detect it or some compenents of it. That would utilize thin layer chromatography and I don’t know how many labs actually do that any more—but I truly have no idea where or how or if a lab could test for it since I don’t have much of a background in chemistry, sorry!
Hope that helps.
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‘Abundant’ probably just means the hands were smeared with mud on some parts, not that they had clumps of mud in them. Why it would be on the hands after being in water—some possible reasons might be that the body got hung up in muddy shallows and that’s why it was found, or it was dragged over muddy areas when pulled from the water. As I don’t have any picture of where it was or how it was recovered, that’s my best guess.
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The requirements to work in a forensic capacity depend upon the agency--it might be anything from a high school diploma to a PhD for DNA analysis. The only way to know is to contact each agency and ask. Or at least check their websites, or the websites of forensic organizations such as IAI and AAFS, which post job vacancies. Drawbacks can be a lower salary than in the private sector, hours of work, having to work overtime or be on call. I don't know what you mean by 'self employ,' sorry. There are no 'freelance' type forensic positions that I know of, unless you have a specialty like soil analysis or anthropology, then you might be able to work doing consulting work when needed. But you'd have to have many years experience before that would be an option. I hope that helps! Best of luck!
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So far it hasn’t come up in my work, and we have lots of PPE (Personal Protective Equipment).
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Sorry, the link just took me to the sign-in page.
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We don't have a set schedule for interns. They'll come in on weekdays, but other than that we work with their school/work schedule.
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In my personal experience, I have only testified to bloodstain pattern analysis once, and it didn’t really tell anything significant about the case because there was blood everywhere, and the fingerprints in blood weighed more than the patterns.
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It may depend on what you want to do. If you want to work crime scene, then you might be a more attractive candidate with all the hands-on practical work of a forensic science degree. But if you want to be a DNA analyst, then I’d go with biology. Best thing to do is call the labs where you might someday apply and ask them. Best of luck!
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I don't get that impression.
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I would major in biochemistry for either, and/or genetics for DNA. Best of luck!!
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That depends entirely on what in the field of forensic science you want to do. The best way is to call some of the places you’d like to work as ask what their requirements would be, because they can vary all over the country. Smaller labs will want you to cross train.Larger ones might want you to specialize.
Good luck!!
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I don't believe so (in fact I believe I address this question during an autopsy scene in my book Perish) but you'd have to ask a pathologist. Sorry I can't help.
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I'm so sorry for your loss. They most likely drew the blood right away, and tested it three days later. As far as I know that would not affect the results--bodily fluids are usually not tested immediately since the M.E. or coroner's office sends the samples to a different location for testing. Blood for alcohol testing is collected in special gray topped tubes for that particular purpose, designed to keep the results accurate. Again, I'm sorry for your loss.
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I'm sorry but I don't know what a FEPAC school is.
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Huh, that's a good question. I hope my books show what it's really like, except, of course, that my protagonist spends much more time out of the lab than in it, which is not at all realistic.
The non-fiction TV shows and books show reality, however, you have to remember that they're presenting cases that most investigators may come across once or twice in a lifetime.
Fiction shows, like "CSI" in which they have computerized databases of every substance in the world including toothpaste and wall paint, or ones in which female pathologists wear cocktail dresses to work. are definitely not realistic at all.
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I”m sorry but I don’t understand the question. What is physical fingerprinting and what is a scientific sphere?
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Sorry, but no. I’ve never been involved in the psychology of the suspects.Best of luck!
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Generally about a 6 to 10% identified rate is good. Many prints that are collected at scenes by officers are ‘not of value for comparison ‘ (smudges or only have a few ridges) and many that are good belong to the victim or their friends, family, employees etc.
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If you want to be a DNA analyst you may need a Masters or PhD in genetics, depending on the requirements of the agency or facility. Check vacancy postings at professional organizations, such as https://webdata.aafs.org/public/jobs/postings.aspx and https://www.theiai.org/job_listings.php.
Best of luck!
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I may not be the best to ask since I'm not really on the front lines, I come in after the action is over, but in my opinion, yes. You don't get criminal masterminds in real life.
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We don't have any particular code words so that only we know what we're talking about. Police departments have all sorts of codes for types of crime--such as, where I live, a signal 23 is a burglary. Signal 4 is a traffic accident. 10-8 means you're on duty and available. 10-6 means you're on duty but busy. If we're somewhere, like a crime scene, and we don't want other people to overhear us we're just careful to move away and out of earshot. Hope that helps!
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For school projects, please email me all the questions at once at: lisa-black@live.com
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Sure, no problem. Please email me at lisa-black@live.com.
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It depends upon their position and the recoil of the gun and mostly on gravity. I've seen a few where the gun is in their hand, not so much because they're gripping it but because the hand falls to their lap or their side or something. But most of the time the gun has fallen to the floor or at least a lower spot.
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Luminal and dye stains just enhance or show you where things are, like blood or fingerprints. DNA analysis and fingerprint analysis are equally effective, so you use what you have. You might have DNA at a crime scene but no fingerprints, or vice versa. We don’t get a choice of what’s left at a crime scene, so we have to make the most of whatever is there. Given that, whatever is the most effective is whatever gives you information relevant to the crime. Say there’s a smear of the victim’s blood on the suspect’s shirt. The suspect tells police he found the body and tried to administer CPR. In that case, the DNA is very much there, but useless to solve the crime. If the suspect says he never met the victim and the same shirt is found in the suspect’s closet , then that’s very relevant to solving the crime.
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Any science major is a good thing. The requirements for each agency or lab vary, so if you have a particular location in which you wish to work, you might call all your potential employers and ask what the job requirements are. Then you can decide whether a science degree, a forensic science degree, a masters or a PhD would be best. Also check salaries and decide whether they are sufficient, and be prepared for a lot of competition.
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That all depends on where you work, what the caseload is, and what your job duties are. If you work someplace with a huge backlog and more work than you have personnel for, it could be stressful. When I was at the coroner’s office it was exhausting, we had a ton of work, not much staff, were underpaid, and my boss was a little crazy, but i loved it so much I didn’t care. At the police department now we have just enough people to manage the work, so even though it gets busy at times we stay on a pretty even keel. Good supervisory management is key (in any field). Best of luck!
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Supposedly, but I don’t know of any cases personally.
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Hair is just dead cells, so once something is there, it stays there. Hair grows at about 1/2 inch per month, in general (mine, to my frustration, grows much more slowly). So if your hair is longer than say 6 inches, the cocaine will still be there. If your hair is much shorter, then I don’t know what’s happening.Hope that helps.
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For homework interview questions, please email me at lisa-black@live.com.
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Possibly, I suppose. If they were swabbed thoroughly and the swabs picked up a few skin cells, then it would be within the realm of possibility.
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Wow, sorry, I have no idea where the subclavian vein even is. I’m afraid you need a pathologist.
Sorry I couldn’t be more help!
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At my agency the chaplains are all civilians from local denominations.
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Almost certainly, no. Unlike television, real forensic equipment is designed to test for certain things. For example the mass spectrometer in the toxicology department is set to test for illegal narcotics and not heavy metals such as arsenic. If arsenic is suspected, it could be detected with a different instrument or different parameters programmed into the same instrument. So I doubt there is any equipment that could be set up to detect microscopic amounts of photographic chemicals, if a photo would even shed any.
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It hasn’t changed. In general it’s best to process an item at the scene so that handling and possible smudging is kept to a minimum, but it depends on many circumstances. If there isn’t a clean dry place to do it or if the person at the scene doesn’t feel their expertise is adequate for the particular item or mostly if the item needs other processing than the simple black powder or mag powder. If it’s a porous item like plastic or vinyl or paper and might need to be superglued or sprayed with dye, then it should be transported to the lab.
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As far as I know that is possible. Whether a medical examiner’s office would actually test the water in the lungs in a case of apparent drowning is another matter. There is also the possibility of ‘dry-drowning’ in which the throat closes and no water gets in the lungs. A pathologist told me once that drowning is sort of a ‘negative diagnosis’ in that, if no other cause of death presents itself and the person is found in water, then drowning is assumed. Sorry I can’t be more help!
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It all depends on the circumstances of the death (fire victims can have a smoke smell, of course) but mostly the degree of decomposition. That's the only thing that makes a difference, otherwise everyone is the same.
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I have no idea.
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I don’t know that game.
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That entirely depends upon what agency you work for. Some police department crime labs may have that requirement. Many, like mine, have civilian employees for forensic support. The only way to know is to call the place you might want to work at and ask. (Or check their website for job postings.)
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That's a pretty broad question. I can tell you that for both seminal stains and blood stains, the best way to package one is to let it dry, then place in a sterile paper envelope or bag. Never plastic! Then keep in a dry, cool environment.
Hope that helps.
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I always loved mysteries and detection, but didn't want to be a cop.
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I'm not sure what you mean: a) how long after a print is left will ninhydrin still detect it, in which case I can say from my own experiment that there's little rhyme or reason to this, sometimes older prints develop better than newer ones or vice versa, or b) how long does a print developed with ninhydrin last, and the answer to that is that ninhydrin is a dark purple dye, so it is permanent, though it will continue to develop so that the entire page may eventually turn purple so we use a fixative chemical on the now-visible print so that will stop the ninhydrin from darkening the paper further. I hope that helps!
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I suppose that’s theoretically possible, but I wouldn’t think it likely. The saliva would sink into the paper of the money quickly, and then when swabbing the person’s skin you’d have to happen on the exact spot where that tiny bit of saliva transferred to.
I hope that helps!
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Sorry, I wouldn't know anything more about it than anyone else. Try Google. Or watch the excellent miniseries, "American Crime Story: The Run For His Life." It was great.
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I'm sorry, I was sure I answered this long ago! Collecting buccal swabs is very easy--they come in a kit with everything necessary plus instructions for rubbing the swabs on the inside of the mouth and then packaging. Anyone could do it. I've never heard of a case where it was considered contaminated.
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No, thank you. I would never want to be a cop--I don' t know how they do what they do. I would hate having to deal with stressed-out people all day long.
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They’re all shocking, in their way, But there hasn’t been one in particular that bowled me over.
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I actually don't know. I haven't done DNA analysis in 20 years so I don't know all the details of what analysis can show. Sorry I can't be more help!
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Wow, that's an extremely broad question. I don't know if the rates of crimes solved have been increased greatly--perhaps in some crimes like rape or murder but perhaps not in other crimes like burglary and theft. But certainly the biggest advances in forensics have been DNA and the connectedness of fingerprint databases. Less specific but perfectly valid analyses like pollen, soil, and other trace evidence examination have gone by the wayside. And digital analyses such as the downloading of cell phones and personal computers are helping solve crimes more and more, but then people didn't have cell phones or personal computers 40 years ago so I'm not sure that counts!
I hope that helps!
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If you have a list of homework questions, please email me at: Lisa-black@live.com
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We’ll hold the scene as long as we need to get everything done, and that could be a day or two or three, but for a kidnapping it probably wouldn’t be more than a day, just enough to collect all the victim’s stuff, and collect fingerprints, hairs, fibers, anything that might belong to the kidnapper. We eventually get tired and want to go home (though we can go and come back, so long as it hasn’t been ‘released’) and the police department don’t really want to hold it longer then absolutely necessary, because they have a cop or two sitting there doing nothing but guarding the scene, and it takes them off the road. Hope that helps!
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I don’t know what you mean by that.
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Again, titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or whereever you might be interested in working and ask them. At the coroner's office we had to have at least a bachelor's in a natural science (this was before they had forensic science majors). At the police department where I am now, they only require a high school diploma but you get more points in the interviewing process for having a four year degree, so we all have one. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. Good luck.
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I'm a civilian employee, not a sworn officer, so no.
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I don’t know.
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I don’t see why not. But I wasn’t aware hair could be tested for alcohol, I thought it was only drugs and heavy metals.
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Who’s Roger Stone?
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That depends entirely on where you want to work and what you want to do. If you want to do DNA analysis and testify in court about it, you may need a PhD in genetics. If you want to work at crime scenes bagging and tagging evidence, you may need only a high school diploma, with added hireability for advanced degrees. The only way to know is to check job opening notices or call the agencies and ask. Best of luck to you.
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You just do. Somehow you can either tolerate it or you can't, or you learn to cope with it. There are cops who can work homicide for thirty years and still have a weak stomach. They just don't let it keep them from doing their jobs.
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That’s an excellent question that I”m sorry I can’t answer. You will need to ask a pathologist. Sorry I couldn’t be more help!
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That’s a very broad question. What specifically do you need to know?
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No. Like any job it can be tiring and tedious at points, but the only time it makes me anxious is always due to bureaucratic issues, which, again, you’re going to have in any job.
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Sorry, I think that's something I used to know years ago but have since forgotten. I know the DNA can be cut, maybe by enzymes? into the sections of short tandem repeats. But I haven't done DNA analysis in 20 years, so my skills are not up to date. Sorry I couldn't help!
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Probably a small plane crash. And one terrible case of elder neglect.
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I don’t interview suspects—or victims or witnesses.That’s the detective’s job. I’m there to analyze and collect evidence.
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Yes.
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As absolutely no agency I've ever heard of requires an IQ test for hire, I would have no idea.
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I’m sorry, but I can’t. I haven’t done DNA analysis in over 20 years. Sorry I couldn’t help!
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That would depend entirely on what the mess up was and what it affected, and whether it was an honest mistake or the result of negligence or bias. For a serious mistake, yes, I'd probably be fired.
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I do not, as I'm not trained in digital forensics. But my coworker who is says that many many times, what people think is deleted is not really deleted.
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Basically just use a sterile swab, rub it on the inside of the cheeks, and package it with a desiccant or in a paper envelope that would allow a little bit of air flow (not plastic). As long as it’s not soaked in someone else’s DNA or bleach or something, it’s pretty foolproof.
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Sure! Email me at Lisa-black@live.com.
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I can’t imagine having so little to do. That would make me crazy.
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I'm sorry but I have no idea. I have no legal training. You'd have to ask a cop or a lawyer.
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It helps. But I know good homicide detectives who do it for years and still have a weak stomach and they do fine.
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That seems like a good plan. It depends on what you want to do--if you want to work in a lab you might want to major in biology or forensic science (if available) and minor in criminal justice. Titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or wherever you might be interested in working and ask them. At the coroner's office we had to have at least a bachelor's in a natural science (this was before they had forensic science majors). At the police department where I am now, they only require a high school diploma but you get more points in the interviewing process for having a four year degree, so we all have one. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences or International Association for Identification and check out their job vacancy postings and see what the various positions require. Good luck.
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Sure, it’s Lisa-black@live.com
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Probably 'touch' DNA, getting a DNA profile from someone's skin cells where they touched something. It's always a bit of a crapshoot because without a visible stain, you can't be sure there's any DNA there at all. But it's worth a try and sometimes we get results.
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I am an expert in some areas of forensic science. I am not an expert in law, public safety policy or our political system.
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The basics: our name, address of crime, date, time we arrived, and who else was there (cops, detectives, ME, etc.). Then what we did there, processed for prints, how many photos we took, chemicals used, if we collected evidence. We might also measure the area and make a sketch.
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I don't know what you mean by that. Different staff might have different specialties, like bloodstain pattern interpretation or digital forensics, but there's pretty standard things that have to be done at every crime scene, like photography and collection of evidence, processing for fingerprints, etc.
I hope that helps.
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No, I've never regretted it. And your job title is whatever your agency says it is, so 'forensic scientist' and 'csi' can mean different things in different agencies, so you can certainly be both. the first implies you work mostly in the lab and the second implies you work mostly in the field, but depending on the size of the agency and any specialization you have, you might do both equally or they might be completely separate.
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Sorry, I answered this right away but somehow it didn't 'take'.
I'm not familiar with the term, but I would guess so.
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Yes, yes and yes. Our Evidence department’s job is to keep track of everything, how long it’s been around, and then get the responsible party (usually the collecting officer or a prosecutor) to sign off on it’s ‘disposition’, which can be returning it to an owner, destroying, or sale or donation. For example, if you find something (like money) and turn it in, if it’s not claimed after a certain amount of time, you can have it. Stuff that no one wants is destroyed. They had a company that used to sell stuff but I don’t think they’re using it any more. (I think it was called PropertyRoom.com) Things like bicycles can be donated to charitable organizations to give to underprivileged citizens. Drugs are destroyed (which has to be witnessed by at least three people from three different departments—I have to be one sometimes when my boss is busy and we have to escort the Evidence van to the waste management facility and stand there and watch the stuff go into the incinerator...not fun in the summer months!).
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titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or whereever you might be interested in working and ask them. At the coroner's office we had to have at least a bachelor's in a natural science (this was before they had forensic science majors). At the police department where I am now, they only require a high school diploma but you get more points in the interviewing process for having a four year degree, so we all have one. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. Good luck.
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I”m sorry but I have no idea.
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See above.
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Yes, of course! You often have to be a little flexible in your schedule, but it's no more a problem than in any other job.
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Yes and no. Labs and units have expanded a lot in the past 10-20 years especially due to federal grants, but they're not as big as you see on TV. A small police department may do only fingerprints and send everything else to the state lab. A big city facility might take up an entire block or two and do everything from drug testing to paint and glass. As for skills, take as much science classes as you can and try to find programs with hands-on field work. Best of luck!
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Not necessarily. I would say in this day and age, all bets are off.
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The most important qualities to have would be patience, persistence, attention to detail and objectivity.
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I have no idea.
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Not my field.
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I don’t know any more about it than you do.
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I'm sorry, but I have no idea. I don't work in digital forensics.
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Yes, absolutely. As long as the sample is dried thoroughly before it can decompose and kept someplace dry and not overly humid or hot, it would be fine.
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I don't know of any particular mathematics requirements. You'd need enough basic math skills to balance chemical equations, calculate reagents in formulas, and record accurate measurements. Ballistics or accident investigation might need more advanced skills, but I would not know about that. Good luck!
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Excellent question! I’d have more equipment, more salary and more hair, so that would be better. I would also apparently have no life outside my job, so that would be worse.
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Yes, about 60 times over 25 years. But not nearly as often as you'd think.
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It’s whatever the particular agency’s Standard Operating Procedures require. Each police agency can make their own requirements.
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I see that on TV all the time but I have a hard time believing it. But I don't know personally. Sorry!
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If it were allowed to dry and kept dry, then it's possible, though the odds would be incredibly slim since the decomposition fluids from the body would most like overwhelm it. It's worth a try.
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No. The action is all over by the time I get there, which is just fine with me.
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‘Detective’ is just a position, like sergeant or school resource officer, so what the detectives investigate depends on what department they’re in—white collar, ‘property’ (which would be burglary, theft, vandalism), ‘persons’ (assault, murder, sex assault), vice/narcotics, etc.
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Sure, I'll be happy to help. Email it to: lisa-black@live.com
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Honestly, I have no idea. I don't believe we've had any cases in my town yet, or perhaps I don't know because the police department wasn't involved.
Also, only the coroner's or medical examiner's office can declare a cause of death, or the attending doctor if they're under a doctor's care at the time. It's not up to the police department or any other government agency.
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There was a really bad case of elder abuse that I think I blocked out of my mind for the most part, because I can picture only a brief image of it while I remember everything else about the call. Other than that, no.
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I am an expert in some areas of forensic science. I am not an expert in law, public safety policy or our political system.
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That depends entirely on where you want to work and what you want to do. If you want to do DNA analysis and testify in court about it, you may need a PhD in genetics. If you want to work at crime scenes bagging and tagging evidence, you may need only a high school diploma, with added hireability for advanced degrees. The only way to know is to check job opening notices or call the agencies and ask. I would also suggest that you look for schools that have hands-on lab work with forensic topics such as fingerprints or crime scene work. Best of luck to you.
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I don't think there's a standard set of questions. The hiring agency can ask anything they want, I suppose. When I had one for my job they asked about past drug use but I don't remember if it was 'ever' or 'within the past x years..' Sorry I can't help.
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I have no idea and don't know anything about the case.
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Usually they’ll tell me the basics, what seems to have happened—there’s a body in the bedroom, this car hit that car, the homeowners came home to a broken front window and are missing jewelry from one bedroom but nothing else. Usually it’s everything they know, in general, but mostly what’s relevant to me. I don’t need to know the whereabouts and timeline for every suspect, but I need to know when the victim was seen last, when the neighbor heard shots, that the gun was removed from the scene for security (which we frown on, but if it’s necessary then it’s necessary), that the one bedroom door is closed because there’s a large dog in there so don’t open it. If there’s anything else I want to know I’ll ask, but usually then they leave me alone to do my thing. Hope that helps!
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A pathologist is a doctor, so you'd have to go to med school first, and they usually have standard placement systems. To be a forensic scientist, it's best to get an internship position with your local lab while you're in school or just graduated. Or at least contact all the labs you're interested in, ask for a tour, meet people. You can also attend forensic conventions, though you'll have to pay for the registration. Hope that helps!
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A detective is definitely a sworn officer. A CSI or forensic tech or whatever their title is, may be a sworn officer at some agencies but commonly is a civilian person who handles the forensic aspects of criminal investigation. Unlike television, we don't interview suspects or canvas neighbors. I might ask a witness or victim if they moved something or if the door was locked when they arrived, but that's all. Our focus of work is much more narrow. We may work to find a source of some clue like a brand of paint or a type of shoe that left a print, but mostly it's the detective that's going to do all the legwork to follow up witness statements and other clues. Hope that helps!
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Get a degree in forensic science or a natural science and apply to a crime lab or police agency.
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I haven’t seen it. I’d like to, but I don’t have Netflix.
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No, not that I know of. No reason to, and I wouldn't want to anyway. I have enough stuff to carry around.
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No. It’s more of a general awareness that ‘life is short, so enjoy every minute’. Which I think is a good thing.
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As far as I know, certainly.
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I've never seen that happen in my personal experience.
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Forensic science degrees or degrees in biology or chemistry. If you want to go into DNA analysis specifically, then perhaps genetics would be good too. Best of luck to you!
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Can’t imagine what gave you that impression, but you sound like one of the above mentioned people who post a question only to goad me into saying something non-PC.
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I have no idea.
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I think your definition of valid and mine may vary.
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I am an expert in some areas of forensic science. I am not an expert in law, public safety policy or our political system.
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The numbers and codes refer to types of crimes or types of status (busy, on the way, leaving the scene etc.), but they’d be the same no matter who you’re talking to.
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Yes, absolutely. Blood samples can last decades if stored properly. The most important thing is that they’re dried thoroughly right away so there’s no decomposition. After that, they need to be kept away from UV light and at a steady temperature, the lower the better. Frozen is good, or at least refrigerated, but they can even stay at room temperature as long as it doesn’t get too hot or humid.
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I was wondering!!
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If you’re looking at behavioral psychology, I’m afraid I have no idea what job requirements would be. Try to find the websites of professional organizations, like American Academy of Forensic Sciences, and check their job vacancy postings for job requirements. I’m sure there must be national organizations of behavioral psychology as well, and they should be able to guide you. Best of luck to you.
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Not that I know of.
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I don’t know what you’re referring to, and I wouldn’t know the answer anyway. I’m not a lawyer.
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I don’t know what you mean by this. What is the disadvantage of working as a forensic scientist? Or what are the disadvantages of the existence of forensic scientists? Or what factors work against you when trying to obtain helpful information from evidence?
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I’m sorry but I’m not familiar with what K2 is.
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I am an expert in some areas of forensic science. I am not an expert in law, public safety policy or our political system.
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I'm sorry but I have not heard of that case.
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I can't click on links I don't recognize. What's it about?
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I live in a small, low-crime city so I have no experience with this.
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Nope, not so far!
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You'd have to be a general CSI and then take extra continuing education in bloodstain pattern analysis specifically. Also, I can tell you from personal experience, if you really want to do a lot of it with great expertise, you need to live in an area where there will be lots of bloodspatter cases to practice and work on. Best of luck!
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I don't watch the show, so I couldn't comment. But fiction is meant to be entertaining, and it's usually more satisfying to focus on one story at a time.
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What is it you’re going to want to know about them, because I may or may not be able to help.
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Again, I'm not an expert in public safety policy, so I don't know any more about the implications than you do.
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I work in a police department, so yes, work with them every day.Though my immediate coworkers and immediate supervisor are all civilians.
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Because films are entertainment, and stories are more satisfying when they have a definite end.
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It might be nice to retire and be able to write full time!
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I've never known anyone who became one of our victims, so no.
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I don’t know. Luckily I don’t have to deal with those cases other than assisting in a search warrant, since I am not trained in downloading computers and phones (my coworker does that). I think you’’d have to ask a lawyer.
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Probably the most raw was a small plane crash.
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Nope, not planning on it!
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That’s a tough question. If you want to work crime scenes, then the cs tech major might be better. If you want to work in the lab, it might not be very important. I would advise you to call the forensic units at the agencies you’d like to apply to and ask their opinion. With either degree, they may more likely place more emphasis on whether the courses had a lot of hands-on experience, if you have any work experience in the field, labs, internships, etc. That’s how my agency would feel.
Best of luck to you!
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No. That’s the actress Lisa Hartman Black.
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Thanks for asking! I wish kids would stop cutting and pasting their homework questions for me to answer for them.
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They would put themselves at risk of contracting kuru, which is similar to Creutzfeldt-Jacob disease.
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I suppose anything’s possible, but it depends on how well a dried stain is going to transfer to anything. usually a dense, dried liquid simply flakes off a surface. Someone could try wetting the rag but I honestly don’t know how well that would work or if at all. Also, whoever is collecting any evidence off that child would have to swab that exact spot. So I can’t say it’s impossible but I would guess it’s unlikely to work. Hope that helps!
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I don’t even know what my IQ is. It’s hard to judge stupidity, since most crimes seem really stupid if you look at the benefits versus the risks. And if the criminals were brilliant, ideally, they could keep anyone from knowing a crime was even committed. Most murders are not premeditated—an argument gets out of control, so suddenly the killer has to figure out what to do, this is a situation they didn’t expect, and they’re highly agitated, so they don’t do a great job of covering up. And then more intentional crimes, burglary, vehicle theft, drug dealing—well, if they were smart, they’d get into more lucrative lines of work.
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If you're trying to ask something, you need to be more specific.
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I try to make them realistic, but they’re not based on real cases. Except for Trail of Blood, which is partly about the unsolved Torso Murders in Cleveland in the 1930s.
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I”ve heard that rumor too, but I don’t see how it could possibly be true. Cause of death is decided by a myriad of different doctors. Generally it is signed by the doctor who was caring for the patient regarding the condition that led (or at least appeared to lead) to the death. If that is not clear, if the person wasn’t consistently under a doctor’s care or if, say, a cancer patient suffers a traumatic car accident, then cause could be determined by a different doctor. That could be a pathologist at the Medical Examiner’s Office, a cancer patient’s oncologist, an ill person’s regularly-visited doctor, the doctor on staff at a nursing home, a hospital doctor who’s been caring for the patient during a temporary stay, or even an emergency room doctor. In the past few months I’ve been called to a number of deaths and none of them were ruled as COVID cases.
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At my agency we send all DNA testing to the state lab. We can give them the scenario of our crime and ask them to rush testing, but how they decide to handle their casework is entirely up to them.
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I am an expert in some areas of forensic science. I am not an expert in law, public safety policy or our political system.
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I don’t know anything more than you do.
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Nope. I’m lucky to have a pretty cast iron stomach.
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If the agency you apply to accepts it, then yes. Our agency just asks for at least an associate's degree but doesn't specify the subject, so you would qualify. What an agency is looking for beyond any degree is up to them. They might want only those with forensic training, or they might prefer someone who's had laboratory training even if not specifically in forensics over someone who had forensic training but no hands-on lab work. The only way to know is to call them and ask. Best of luck to you!
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I have no idea.
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Sometimes. Perhaps 10% of the time.
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At my agency we’d be calling either Dispatch or, less likely, another person, in which case we’d use their badge number. What people call their dispatch unit, base, station, (we call them the name of the city, the first word in ‘such and such police department) probably depends on the habits of that particular agency. In other words there is no difference. Hope that helps!
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Quite the contrary, I find myself apologizing to them if I bump into their gurney. They’re dead. How could I not feel sorry for them?Both my department and the various forensic organizations of which I am a member have published codes of ethics to which I have always adhered.
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That's not something I have anything to do with--it's the detectives' and/or attorneys' decision. I supposed they think if they get results that are really surprising it can hint if they're looking at the right people or not.
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I am not familiar with the forensic aspects of the case.
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I'm not aware of that case.
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Weird--that looks fine in my email but is distorted on this site.
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Did it every day. If it bothers you, you probably don't want to work there. Though our lunchroom was on an upper floor so there was no sight, just sometimes smells.
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That depends on where you live or where you want to work. You can check job vacancy postings at local agencies, or if you’re willing to relocate then check vacancy postings on organization websites like American Academy of Forensic Science or International Association for Identification. That will give you an idea of what is available and what the requirements are. Best of luck!
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I would think it would help because it would show some familiarity with law enforcement agency procedures. Even if you work for a completely civilian agency such as a medical examiner’s office, you would still be interacting with law enforcement constantly, so I would think it would help. Though even if you can carry a gun and badge in your everyday life, you probably wouldn’t be able to carry it on the job unless it was all right with your employer.
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I do not work at a coroner’s/medical examiner so I don’t cut anyone. At a crime scene I might examine the eyes or test the limbs for rigor or look for injuries but that’ s about it.
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Yes, absolutely. I can’t think of anything I’d enjoy as much.
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I am an expert in some areas of forensic science. I am not an expert in law, public safety policy or our political system.
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I’m sorry but to be honest, I haven’t thought of her at all. I don’t know any more about the case than you do—probably considerably less—and I’m not aware of the relevant forensic evidence. And like most I’ve had many more immediately personal issues to hold my attention in recent months so I’m afraid I can’t help you.
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Probably a small plane crash. And one terrible case of elder neglect.
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How does that question relate to forensics?
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That’s a good question…I know that the human body will either decompose or desiccate, so if the conditions were right and she dried out instead of breaking down, then the body might be largely preserved. But what could be determined from an autopsy would be a question for a pathologist, I’m afraid. Sorry I’m not more help.
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Do you mean a Tyvek suit? To prevent cross contamination? We have whole body suits but have not yet had a scene that required them. We will wear disposable booties and of course gloves for any homicide scene. Sometimes the point, as with fentanyl and COVID risks, is to protect ourselves, and sometime the point is protect the scene and keep from dragging trace evidence from outside the scene to inside the scene.
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That depends entirely on where you want to work and what you want to do. If you want to do DNA analysis and testify in court about it, you may need a PhD in genetics. If you want to work at crime scenes bagging and tagging evidence, you may need only a high school diploma, with added hireability for advanced degrees. The only way to know is to check job opening notices or call the agencies and ask. I would also suggest that you look for schools that have hands-on lab work with forensic topics such as fingerprints or crime scene work. Best of luck to you.
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I have not seen it.
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We used to, but only when we were at crime scenes, we wouldn’t have it on all the time when we are in the office. But somehow they went to new ones and we didn’t get any and have done without them since.
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The ability to find 'contact' DNA, the improvement and proliferation of video cameras and the improvement and proliferation of downloading cell phone data. I think those are the major points.
Hope that helps!
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I’m sorry but I have absolutely no idea. I have never worked in toxicology. Though my coworker did have to research testing for bleach in one of our cases, I will ask her when I get back to work next week.
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Contact your local PD and ask what their procedure is. You will probably have to fill out an application and a waiver. Best of luck!
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Some law enforcement agencies still require their forensic staff to be sworn police officers as well, but most have civilian staff for the forensic support. I have always been a civilian and therefore cannot carry a gun.
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That's quite possible, the body reacts with the fetal position to many circumstances. I responded to a fatal traffic accident--it actually happened right in front of me--and the victim was thrown from the truck, and that's exactly how I found her. However, bodies and causes of death are really questions for a pathologist.
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All of those are good. Take as many science courses as you can. Much depends on where you want to work and what you want to do. If you want to do DNA analysis and testify in court about it, you may need a PhD in genetics. If you want to work at crime scenes bagging and tagging evidence, you may need only a high school diploma, with added hireability for advanced degrees. The only way to know is to check job opening notices or call the agencies and ask. I would also suggest that you look for schools that have hands-on lab work with forensic topics such as fingerprints or crime scene work. Best of luck to you.
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I agree.
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Trace Evidence, my first book, was optioned and I wrote the screenplay for it. But the producers couldn’t sell it and had to give up. I’ve had nibbles on other books but nothing yet. I keep hoping!
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That is a great question that I can’t answer! So sorry, but I never worked with a GC or Mass Spec. That was the toxicology department.
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Take as many science courses as you can. Much depends on where you want to work and what you want to do. If you want to do DNA analysis and testify in court about it, you may need a PhD in genetics. If you want to work at crime scenes bagging and tagging evidence, you may need only a high school diploma, with added hireability for advanced degrees. The only way to know is to check job opening notices or call the agencies and ask. I would also suggest that you look for schools that have hands-on lab work with forensic topics such as fingerprints or crime scene work. Best of luck to you.
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Either is good. It depends a bit on what you want to do. If you want to work crime scene, then general forensic science is probably good. If you want to go into toxicology, then chemistry, and if DNA, then biology or genetics.
Hope that helps.
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Not that I know of.
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I'm not familiar with those terms. Sorry I can't help!
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I didn't know there was a character limit. But yes, many people write 'how can I become a forensic scientist' without ever checking past questions to see that that has been asked 20 times. And I think others are trying to goad me into saying something non-PC. Apparently too many people have too much time on their hands.
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It depends on what you want to do. I've always used only basic addition, division etc., for calculating reagents. Accident reconstruction would probably require a bit more and maybe DNA analysis, but I don't really know. Best of luck!
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Probably everyone gets interested in the field because it looked interesting in a TV show. But by the time you’re sufficiently trained to actually get a job, you’d know that it’s not like TV.
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That's a good question, that I really can't answer. A pathologist would be much more knowledgeable on that topic. But from personal experience I can say that bruises are funny, and they change over time. It depends how deep the damage is and on the person's chemistry and I think it makes a big difference whether the muscles are tensed or not when hit. Sorry I can't help!
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I’m sorry but I’ve never worked in toxicology. Sorry I couldn’t help!
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I don’t know what you’re referring to.
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No, just a regular brush, and UV light, as far as anyone here knows, wouldn’t make any difference. The gloves will, however, leave more traces the longer they are worn.
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Because trials don't occur, especially for a homicide, for another year or two or three after the crime, when there's no longer a chance to go back and collect other evidence. Confessions can be recanted, videos are never as clear as they look on TV, and everything will be challenged during a trial. And the evidence can be twisted. I had a guy who confessed to three different people the night of the crime, and then a year later went to trial and pled not guilty.
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I’m sorry but I can’t. That’s a question for a toxicologist. I don’t know anything about drug chemistry.
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I’m sorry for your loss. What was the cause of death?
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I think it would absolutely help your chances. But all agencies might not be looking for the same things. I would check the websites for all the agencies you’re interested in to see their job postings.
Best of luck to you!
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I don't follow sports so I haven't seen the story.
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That's never happened to me at the police department, but then there's only my forensic unit with access to our refrigerator so it's not a problem. But it used to happen in the lunch room at the coroner's office all the time! I injected candy with hot sauce once. That stopped it for about a week.
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Yes, certainly. I didn't manage to find the one piece of evidence that solved the whole thing, but I have worked on several. In my department a double homicide finally broke open after 30 years: https://www.news-press.com/story/news/crime/2020/10/01/joseph-zieler-suspect-two-cape-coral-homicides-seeks-dna-expert/3584935001/
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I thought phlebotomy was the drawing of blood, so I assume its mostly used in medicine. But one person in my office is actually trained in it so she can draw our blood when we need samples for positive controls.
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Sure--any good quality black powder should have the same effect.
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I’m sorry but I don’t understand what you’re asking.
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Our police officers do, but I'm a civilian forensic specialist, so I didn't. (I also don't carry a gun, don't interview or arrest people and make a lot less money.)
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If the father caused the death of the son, then it's homicide. If he didn't know the son was there, it's accident (or maybe manslaughter, I don't know the precise legalities).
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I can't think of any one in particular that was the most 'complicated'--many were difficult and complicated for different reasons. Forensics is only part of the whole investigation, so things really get much more complicated for the detectives who not only have to absorb the information we're giving them but deal with victims, witnesses, suspects, documentation, records, warrants and prosecutors. I worked one where the victim had been taken to three different places before the body was dumped and burned, so there were indoor scenes, outdoor scenes, the suspect's house to deal with. Right now we're dealing with one that spans 30 years, so trying to find reports and piece together who did what and when and what, if anything, still remains to be done. And we had one earlier this year that had inexplicable behavior by about 9 different people over three days and all to cover up an accidental death. Hope that helps.
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Apparently experimentation has shown it is possible. It gets more likely the longer the gloves are worn.
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Lividity can be patchy depending on areas of pressure. So you can have reddened areas where the blood flowed in and stayed next to clear areas where the body was pressed against a surface and the blood couldn't pool. You would need to talk to a pathologist for more thorough information. I'm sorry for your loss.
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No, nothing is cleaned. It’s just dried and then kept as is. For one thing you might want to do more testing in the future so you’d never want to wash your evidence away.
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I’ve done microscopic comparisons of animal hairs, when I was doing hair and fiber comparisons at the coroner’s office, to establish a connection between items found on a suspect’s clothing or environment and items found on a victim’s clothing or environment. That’s about it.
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I don’t really know, but at the coroner’s office I worked at I was told that our coroner was actually the highest law enforcement officer, technically, in the county. She was the only person who could arrest the sheriff if necessary. That never became necessary though so I don’t know how it would actually work.
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I have a bachelor’s degree in biology from Cleveland State University. I didn’t have a minor.
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With all bullets a great deal depends on how much gunpowder is used--the charges can be underpowered or highly powered. But I asked my boss, a history major, and he says absolutely that one at close range entering the eye could go all the way through the head. Hope that helps!
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Every group of people looks for reasons to feel superior to any other group of people. It's (a not very attractive part of) human nature. But in my experience interagency rivalries have been super mild. It's more a trope of fiction than reality.
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As far as the job is concerned, I would think the odds of getting the job would be the same, but there are other considerations. The pay and benefits are different (at least at my agency) between sworn and civilian because they’re different unions. A sworn officer would be taking less pay and benefits to be non-sworn so the hiring party might wonder why, or worry that they would get tired of it and want to leave.
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I have no idea as I’ve never worked as a first responder. I would suspect that’s largely a plot device for film or books, but I don’t actually know.
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My guess is it depends on what you want to do. If you want to work in a lab, then biology for DNA or trace evidence or chemistry for toxicology would be the way to go. If you want to work in the field, mostly at the crime scene, then you might want the more general forensic science. Go on the websites of agencies and professional organizations, look at their vacancy postings, and see what they ask for. Best of luck!
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Before I worked in forensics, I was a personnel secretary, a hotel maid, and an ice cream counter server and a gas station 'full service specialist'. My husband is an elevator field engineer. There is 'politics' in every profession. Every. Single. One.
Best of luck!
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I think I am an expert in some areas of forensic science. I am not an expert in law, public safety policy or our political system.
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That’s really a question for a pathologist, but apparently lividity develops before rigor, so it shoudn’t shift much after rigor has set in. However that can vary depending on temperature and physical/medical conditions. Blood will pool following the law of gravity but if the legs were bent, restricting the blood vessels, then it might pool in the torso. Sorry I can’t be more help.
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We don’t have music in the whole department but many of us will listen to it at our desks or on earbuds. I have very eclectic tastes so I have everything from Broadway to ragtime to pop on my phone. But if I’m doing super routine things I’m usually listening to a book or podcast.
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That depends entirely on where you work and what your job is. If you’re a ballistics expert, you’ll spend your days looking at guns and ammunition. If you’re a DNA analyst, you’ll be in a lab with micro tubes. If you’re me, you spend a lot of time looking at fingerprints and sometimes go to crime or death scenes.
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I’m sorry but I have no idea. that would be the detective’s job, not mine.
Best of luck!
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I wouldn't be involved with cases like this so I don't know. In my experience with homeless camps the people are usually not too cooperative and don't want to leave, so I haven't seen this happen.
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I”m sorry but I”ve never used thin layer chromatography. If I had, it most likely would have been to distinguish extracted fiber dyes. As far as I know it’s the only way to determine if natural fibers likely had the same source.
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They didn’t have forensics degrees when I went to school, so learned all the forensic tasks were on the job or continuing education courses. But the science background helps with understanding lab procedures, preparing reagents, and of course explaining what’s going on during the various processes.
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I don’t know what you mean by pure math. Most crime scene work, fingerprints, tool marks, serology, might need regular adding and subtracting, but I don’t know of any field that uses calculus or algebra. DNA analysis uses a lot of statistics and ballistics and traffic accident investigation might use physics and geometry. But those are the only examples I can think of.
Best of luck!
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Well it's worth a try. However, you should be aware that bite marks are not usually accepted as reliable evidence in court any more.
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That's an excellent question that unfortunately I can't answer. One probably would use it, but back when I did hairs and fibers it was generally thought that the only way was to extract the dye and do thin-layer chromatography, which we didn't have. We also didn't have a Ramen, so all I could do was microscopic comparison.
Best of luck!
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Sorry it took me so long to reply! I applied after I got the degree. THat’s kind of odd that they would tell you to apply—does the position require a degree? It couldn’t hurt to contact them for more information and make it clear you won’t have your degree until May and would need to finish your schooling as well. But jobs aren’t easy to come by, so if they’re that interested. In you , you might as well find out more. Best of luck!
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They used to do that in serology, taking threads soaked in the blood and putting them in tiny pools of blood type reagents. I don’t know exactly what the reagents were, sorry, that had never been part of my duties. But if you research old serological techniques you should find it.
Best of luck!
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I haven’t ever done an autopsy at all, since I’m not a pathologist. They can be done on animals, usually it’s called a necropsy and may be done by a veterinarian.
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Because that's not our job. That's the detective's job. They're in charge of and responsible for the investigation.
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I don't see why not, it's rigid and would hold a shape. It's a very small item and somewhat brittle, though. I would think it would be tough to bite all the way through one. You'd probably be better off swabbing it for DNA of the biter.
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Some people don't have enough to do!
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That would depend a great deal on the circumstances. Any hair actually on the victim that does not appear to belong to the victim would likely be collected. If there was obviously a struggle, if the victim was beaten or strangled, hairs on their hands or caught in their fingers would warrant special attention or any clumps of hair nearby. If the victim's lying on a carpet that apparently hasn't been vacuumed for the past decade, then single hairs might be disregarded. If the person is outside and shot from a distance, then hairs would likely be disregarded.
I hope that helps!
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Wow, that’s a tough question! I’m not sure I could come up with ten.
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That’s a good question that I’m afraid I can’t answer. I’m sure there is some way to determine the chemicals used in pepper spray. But this would be affected by a) how long does it remain on the skin before the skin absorbs it and b) most forensic chemistry labs are set up to detect illegal drugs in urine, blood or gastric contents. Identifying any kind of poison or other substance may require equipment or reference databases they don’t have.
Proving it’s the same batch of pepper spray may or may not be possible. I”m not personally involved in this kind of testing, but I can assure you it is not like television. We had a series of cases and wanted to determine the exact composition of drugs with percentages of fentanyl, heroin etc. Turned out while nearly every crime lab can determine if a drug is present, there were only one or two labs in the entire country we could find that could determine percentages, and they charged an arm and a leg.
Sorry I can’t be more help.
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I'm sorry but I've never worked in toxicology, so I've never tested drugs with any kind of test.
Sorry I can't help!
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Best of luck to you! Other than taking all the science and laboratory courses possible, I would suggest checking out the websites of national forensic organizations to check job postings and what different agencies require. You might also decide if you’d consider moving and where. Try to get a tour of any forensic facility you can, this is a good way to meet people and to see what different jobs entail.
I hope that helps!
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I”m sorry but I have no idea—you’d need a pathologist for that one.
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Usually job vacancies aren't that plentiful that you can be too choosy. Are all or most of the duties similar to what you want to do? Is the location acceptable to you (local, or someplace you wouldn't mind relocating to)? Is there a good chance you will meet their expectations sufficiently that they will offer you a job? If the answer to all three is yes, then I would suggest you take it. If the answer to only the first two is yes, try anyway.
Best of luck to you!
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Usually I'm annoyed most often by people asking for things to be done immediately while ignoring a) that we are working on more cases than just theirs, b) that some processes take time, and/or c) that what their asking for isn't going to prove anything for them anyway.
As for fellow scientists, the worst offenses are a) finding typos in my reports and b) taking the last piece of cheesecake out of the communal fridge.
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On the victim’s body? Most likely not because after that much time the victim would most likely be skeletal remains only, if buried and certainly if on the surface. If the body was in some kind of container, sealed, it might be completely decomposed, mummified or preserved, depending on circumstances. If the killer’s blood or semen got on some object that was with the body, it could conceivably survive if protected, but it would be very unlikely to yield a usable DNA profile.
Hope that helps!!
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Yes, certification in any discipline is definitely a good thing to put on a resume.
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I'm not sure what you mean by post certified?
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Wow, that’s a tough question—I can think of projects and experiments, but research....and what ages? I can ask my coworkers for suggestions.
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Wow, best of luck!! I would suggest you Google the heck out of the facility and find out everything you can about what they do—if it’s a state lab, what kind of evidence they accept from the state agencies. They probably test for illegal drugs, but are they testing the actual drugs seized, or bodily fluids from arrested people, or blood/urine/gastric samples from medical examiners or coroners offices—or all three. If you can’t find the information then that’s a good and reasonable question to ask. They’re sure to ask you what kind of instrumentation you’ve worked with, in class or in an internship, etc.—GC Mass Spec, IR, etc., how much experience and what kind of samples you tested. PS If it’s not posted you might want to ask about hours and/or overtime. They might be 9-5 M-F or they might be 24/7, depending on the size and location.
Best of luck!!
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Sorry, I can't click on unknown links. However, in general terms, I don't react to crime scenes, at least as much as possible. I need to treat each one objectively and consistently, so I'd conduct the same relevant duties as I would at any other crime scene--photo, sketch, collect evidence, etc. And I don't really 'solve' crimes--I provide the forensic support to help the detective solve the crime.
Hope that helps!
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What does that have to do with forensics?
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Usually simple black powder will show gloveprints as well as fingerprints. The bubbly sort of pattern they make will be visible.
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Arson investigations, bitemarks...though those might be difficult to do experiments on. Best practices for visualizing superglued fingerprints depending on the surface? Genealogical tracing?
Best of luck!
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Interesting idea, but again I don't know. I don't know what liquid is used for the tests, so that might affect things.
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That depends entirely on the circumstances. If a sample of anything--blood, saliva, semen--is properly dried and kept in relatively dry conditions at a steady low temperature, or even frozen, it can last for decades. If the temperature and humidity vary greatly, then the sample could break down. If it's stored in plastic or airtight when wet it could rot and decompose.
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Yes.
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What is your favorite part of this job?All the interesting, different, bizarre stories that make up the crimes that have happened that we have to investigate.
What is you least favorite part of the job?Being 'on call' and knowing you can be interrupted at any moment of the day and have to go to a crime scene, even if it's the middle of the night or a holiday. I've also had to change vacations because I have to testify in a trial. I hate that.
Being around the dead is something you either get used to really quickly or you don't. The dead will not bother you, but the living can drive you crazy! And stress depends where you work. I have a great office and a relatively low-crime area, so unless we have a lot all happen at once, which is not too often, it's really not that stressful. If I lived in a more hectic place with too many demands and not enough time or resources, it might be a different story.
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I’m sorry but my job has absolutely nothing to do with auditing voting machines. I have zero expertise in that area.
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Titles and job requirements aren't uniform, so the only way to know is to call the crime labs in your area or whereever you might be interested in working and ask them. At the coroner's office we had to have at least a bachelor's in a natural science (this was before they had forensic science majors). At the police department where I am now, they only require a high school diploma but you get more points in the interviewing process for having a four year degree, so we all have one. You can also go on the websites for professional organizations such as the American Academy of Forensic Sciences and check out their job vacancy postings and see what the various positions require. As for determining which area, I would suggest you visit crime labs in the area to see what they do and talk to the people working there. Good luck!
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Like any job it has its tedious moments, but yes I like it.
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Yes, I love true crime. I read pretty much the entire section of the downtown branch of the Cleveland Public Library while I was a secretary before I got into forensics. The books I write are fiction but I'd love to write true crime.
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"Touch" DNA or "Contact DNA" can obtain a profile from an item that someone merely touched: https://en.wikipedia.org/wiki/Touch_DNA
I would say Rapid DNA, which can provide a profile in less than two hours and used in the battlefield, but that's been around since 2014.
And though you've seen it on TV every day for 50 years, it has not been possible for the average latent print examiner to scan in a fingerprint and search every person who's ever been fingerprinted, including job applicants and military. Most databases would be just county or state wide, and may or may not include job applicants (or staff) depending on the preferences of the agency, and certainly not the military, ICE or Interpol. At my department we only got the ability to remotely search the FBI database last year.
Hope that helps!
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Not at all difficult IF the person’s DNA profile is already in CODIS.
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That depends on the kind of forensic evidence.
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Why do you post questions that need to be deleted? Most people have better things to do.
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I'm sorry but I have absolutely no idea. I didn't know there was a cost. I would have guessed that their attorney could request a court order to do so from the judge and the police agency that has the print would take care of it, but I really don't know. Sorry I can't be more help.
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We can compare footprints just as finger or palm prints, but there isn’t a database of footprints so you would have to have standards of the suspect’s feet. Otherwise I don’t know what you mean by ‘looked at.’ Everything is looked at, in a sense—there’s ballistics, fibers, bloodstain patterns, arson evidence, toolmarks, video and photo analysis, paint, glass, etc. and etc.
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I don't believe so, but I haven't done DNA analysis in 20 years so I'm not the best person to ask. I know there's an amylase test for saliva, but I don't know if it's used any more. And if you have a mixture I doubt it would be possible to tell what DNA is from what bodily fluid.
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Departments have access to larger (county, state, sometimes federal) fingerprint databases, though it's still not like you see on TV. DNA analysts can now obtain a profile from 'touch DNA', someone simply touching an object. And video surveillance systems have become commonplace but also much easier to use with better clarity.
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Sorry it took me so long to get back to you!
Yes, fingerprints are impressions made by the oil and sweat on our fingers. If a surface is very dusty, we take away dust on our fingers instead of leaving prints on the object. It will look like fingerprints should be there because there will be finger marks in the dust, but actually we just removed dust.
Hope that helps!
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I have absolutely no idea.
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Sure, you can send it to: Lisa-black@live.com
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I can’t speak to this guy’s course specifically, but deception detection training is often offered to detectives and law enforcement personnel. I sat in on a two day course through my department once, just to use in my writing.
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Any agency can use whatever requirements they want, so some (like mine) require only a high school diploma (but give extra points for advanced degrees, so we all have degrees). Some might require a Bachelor’s in any subject but give more points for forensic training—or not. The only way to know is check their job postings. Best of luck!
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See next answer.
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There have been a few cases in which I testified where the defendants were found not guilty, and I was fine with that. In some there simply wasn't sufficient evidence, in one it was clearly self-defense, in two the defendants were charged with murder and I figured it should have been manslaughter. But that's why we have a jury system, and they did a good job.
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I have no idea--are you referring to utility companies marking gas lines, etc? My agency has some flags but we haven't used them recently. I suspect if an agency uses different colored flags it might be some internal coding that they use. Sorry I can't be more help.
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I think you could ask that about any job. It all depends on the person doing it; if it's only a way to get a paycheck, then it's just a job. If it's all they want to do, it's a career. If it occupies a lot of their personal time, it's a lifestyle. But forensic science can be demanding and most of all, unpredictable, so most people wouldn't do it just as a 'job.'Hope that helps!
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My job isn't like TV--I'm not involved in every single aspect of the investigation. My job is to provide forensic support to the detectives, so in any given case I estimate I know perhaps 20% of the overall information relating to the crime. I don't know what witnesses, victims, suspects have said, what financial or phone records might show, etc. etc. The detectives would probably tell me if I asked, but I'm usually too busy with all the other cases to ask.
Who to arrest and who to prosecute is up to the detectives and the prosecutors. They don't ask my opinion, and in light of the first paragraph, I probably couldn't give them an informed one.
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I would fingerprint around all the damaged areas and the handles, and possibly collect a sample of paint in case the suspect’s keys were found (provided the state lab would do FTIR analysis on a non-violent case). And of course we’d check for any video cameras in the area that might cover the parking lot. And measure the width of the holes in the tires in case the suspect’s knife was located.
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That entirely depends on the requirements of the hiring agency. Since they’d probably require advanced schooling so hirees would wind up being older. It also might have to do with liability if the person would need to drive agency vehicles, etc.
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No, we have lots of paperwork. Lots.
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My lab doesn’t have the ability to test vials of any time. We would send any liquid samples to the state lab.
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Nothing's really 'dumb' since every case involves, a minimum, property loss or inconvenience. Criminals can be dumb...the best example I can think of was when a bunch of boys broke the glass in a door to get into a jewelry store, couldn't find much to take, then were hightailing it out of there as the alarm rang and one was trying to climb back out the broken window and not having much luck when his buddy barreled through the other door simply by pushing the push bar on it. The video was hilarious.
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I’m not a pathologist, so I really wouldn’t know for sure, but I know decomposition can vary wildly depending on circumstances—whether the body is exposed or contained or wrapped; temperature and humidity are majorly important; and predators, insects, water, shade vs sun, all can affect matters. My best guess is yes, it’s possible.
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It means that, like most people, they get tired of people asking them stupid questions.
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That sounds odd, but were they looking for blood or semen stains in particular, or just the DNA of whoever wore it?
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Sure, I visited crime labs and the coroner’s office before I got my first forensics job—usually it was just a tour and answering questions though I got to sit in with a police class at the coroner’s and view an autopsy and hear some lectures. Then I would do the same when we had visiting students. Interns are here for a longer period. We usually have them do minor paperwork and tasks and they can observe our work with evidence, fingerprints, scenes, etc so we can explain what we’re doing and why. It’s a great experience. I think you’ll find people in forensics very friendly and helpful. Best of luck to you!
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I don’t believe there would be any summer jobs at a police department or crime lab, and internships are usually given to students who are college juniors or seniors. Though they should check with the police department, there might be volunteer or Explorer programs. Otherwise any job that involves lab work might help—not just hospitals but food or water testing sites.
Best of luck to them!
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I couldn't tell you--I haven't personally done any studies of bystanders at a shooting. GSR analysis is usually testing for primer residue, which can escape from the gun when fired. So someone could have GSR on their hands if they handled a gun, if they touched a surface near to where a gun was fired, if they handled the gun after it was fired, etc. This is why, though they've stated this on television every day for fifty years, having gunshot residue on your hands doesn't prove you fired a gun. Not having gunshot residue on your hands doesn't prove you have not fired a gun. The particles are very tiny and easily dislodged. These are some of the reasons why most agencies don't do gunshot residue analysis any more. Hope that helps!
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I honestly have no idea, I never did a grad program. Are there any advisors at your target schools that you can ask? But I sympathize—I had the same problem with Organic Chemistry. I got A’s in General Chemistry, but I just never ‘got’ Organic. Best of luck to you!
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Well, as in any job, I like working with people who are competent, responsible and pleasant, whether they're forensic techs, cops, attorneys, or victims. And I dislike working with the opposite qualities.
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7
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At my department I mostly work with fingerprints, analyzing and comparing fingerprints that I collect off pieces of evidence or pick up at crime scenes or ones that the officers submit after they collect them at crime scenes. I will also go to crime scenes, photograph, collect prints, items of evidence, maybe test for blood or collect samples of blood with sterile swabs. There’s also a lot of time spent writing up all this information in our reports and other paperwork. If I worked in DNA or ballistics or toxicology, I would probably spend all day in the lab doing those types of analysis. So it depends on where you work, what services they provide, and what your exact position is. I hope that helps!
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That would be a legal question, unaffected by forensics.
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No. I do lots of stuff detectives don’t do, like lab analysis, scene reconstruction, latent print comparison, etc. And they do tons of stuff I don’t do, like track down victims/witnesses/suspects and interview them, run criminal histories, request search warrants, and so on. So our jobs are really very different. We are there to provide the forensic support for the case, but forensic topics are only part of any case. Hope that helps!
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Yes, unlike what you see on television, evidence doesn’t necessarily ‘prove’ anything. It all depends on circumstances. If the victim’s blood is on the suspect’s shirt and he says he never met her, that’s vital evidence. If he found the body and tried to revive her, then it likely means nothing. Or bloodstains might tell me the victim was stabbed six inches away from the wall, but that doesn’t tell me who stabbed him. But if the perpetrator is caught and describes what happened, the bloodstains might corroborate or disprove his story. I hope that helps.
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I have no idea what you mean by ‘water’ and I don’t see why nighttime would make a difference.
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I know they utilize most a GC and Mass Spec, a Gas Chromatograph and a Mass Spectrometer, but I've never used either one.
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I’m not sure what you mean. Do you mean how does a forensic scientist advance in their career, or what scientific advancements have been made by forensic scientists?
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That’s an excellent question, that unfortunately I can’t answer. We have the OBTI test that can confirm blood is human, but beyond that…I don’t know if there are alleles that both animals and humans share that might show up in the average DNA analysis. Even if animals have some alleles that are the same as humans, if those aren’t the alleles looked for in a DNA test, then it wouldn’t affect things. But if they are, then I don’t know if scientists have a way to distinguish them. Sorry I can’t be more help!
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If the stain is still visible, then clearly the semen is still there, so I see no reason why it wouldn't still have DNA in it. There might be a mixture from swabbing up the skin cells as well as the stain.
Hope that helps!
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A) Totally unrelated to forensics.B) Already have it so it's not relevant.
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I really don't know. I haven't done DNA analysis or biological analysis like that in over 20 years.
Sorry I can't help!
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Could you clarify that question? I'm not sure what mean.
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Unfortunately, no, I cannot. I've never worked in toxicology. Sorry I couldn't help.
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Job requirements depend on the job. Requirements might range from a HS diploma to a PhD. Check the websites of forensic professional organizations (IAI, AAFS, pathology or other disciplines) for job vacancies. I like the variability of the days.I dislike the hours, which can be unpredictable, and require being ‘on call.’
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I have no idea.
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You will most likely need at least an associates degree in forensics or a natural science. How agile you need to be depends on what you're doing--if you're working in a lab, consistently on level ground, a disability would not be an issue. If you're doing crime scene work and you need to sometimes climb on top of roofs or into attics, out in fields, etc., then you need to be mobile. But nothing like police officers or rescue personnel.
Hope that helps!
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I would think they’d have to get rubbed off. I don’t know how one could hold a knife tightly enough to stab someone without smudging all the prints on the grip. Guns, despite what you see on television, are terrible surfaces for prints, though I guess if you were very careful and maybe propped the butt on something, I suppose you could use it without grasping and smudging some areas, like the grip (if it were smooth, otherwise it likely wouldn’t retain any prints anyway) or a shiny, chromed barrel. A knife, maybe if it was big enough that you could grip only part of the handle and leave the prints on the other part undisturbed. Or maybe part of the blade if you didn’t stick it in the body all the way. But I would think it would be tough to do.
Hope that helps!
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Blood is not touch DNA. Touch DNA is DNA left by skin cells or sweat or oil, basically, not a visible stain. So it sounds like this sample 57-1 was either touch DNA or something visible that they thought might be blood but wasn’t.
I don’t know what cc might mean, other than carbon copy (like a copy of the report was sent somewhere else) or cc’s as a unit of measure.
Hope that helps at all!
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I”m a civilian employee so I’m not in the strict line of command as perhaps a police officer is, so I don’t really think in terms of ‘orders.’ If there’s a request of us that we feel could be detrimental to the forensic evidence, we’ll tell them that and discuss alternatives. If that wouldn’t work, I’d get my supervisor involved. If the detectives insist, then I’d probably do what they want (provided of course it wasn’t illegal) and if it makes the case unprosecutable, then that’s on them. So far the issue has never come up.
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Not positively…as far as I know they could tell the blood type and gender, but of course not the positive ID of DNA. I don’t know when they started doing serological testing such as secreter status and PGM sub typing. Hope that helps!
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