Forensic Scientist

Forensic Scientist

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.

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Last Answer on July 21, 2022

Best Rated

How much methamphetamine would it take in a body that was submerged 4 two weeks, for an ME to consider it intoxicated? drowning with environmental hypothermia, contributory cause: methamphetamine intoxication

Asked by Lina N Lete over 6 years ago

I’m sorry but I have no idea. I’ve never worked in Toxicology.

A criminal stabbed to death two victims and then inflicted wounds upon themselves The killer's shirt was covered in blood. Is it possible to determine that one victims blood was on top of another persons blood? Can they tell who was stabbed 1st or 2

Asked by Chunky Monkey almost 7 years ago

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.

Do you feel that the junk science portrayed on TV makes it more difficult for you to give successful evidence in court?

Asked by Marcel almost 7 years ago

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."

How can you prove a controlled substance that was collected from highway isn’t contaminated

Asked by Julie about 6 years ago

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.

I am busy studying Forensic DNA and srtuggle with the following questions:
consequences of contamination collecting DNA

Your assistance would be appreciated.

Asked by Lindi Steyn almost 7 years ago

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.

My son died recently and his keys were in his pocket. They gave me back the keys and wallet in a baggie and I need to clean them. I don't want to open the bag without knowing the best way to do it without the smell and such being overwhelming?

Asked by lmc over 6 years ago

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.

What courses did you have to take in college in order to study forensic science?

Asked by hello my name is makiya mcqueen and i am a student at booker t washington magnet high school. I am currently taking a career preparness course and I am very interested in forensic science. I would love to ask you a few questions for my Career investigatio over 6 years ago

Sure, email me at lisa-black@live.com.