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.
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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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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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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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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Special Education Teacher
How come it often takes years to figure out that a kid is dyslexic?
Hospice Nurse
How did you feel with the passing of your first patient?
Lifeguard
Did you ever have to perform CPR or mouth-to-mouth on a swimmer?
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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Supposedly, but I don’t know of any cases personally.
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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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