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

I have not used cocaine in a year, why is my hair still testing positive for cocaine?

Asked by Terence J Donnelly about 7 years ago

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.

If fingerprints are collected from evidence that can be bagged, does this happen on the scene or later, at the lab? Has this procedure changed over time?

Asked by Satoko almost 7 years ago

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.

Can we make a profile of a suspect (skin color, eye color, etc.) from DNA? If not, why not?

Asked by Mrs.McGurkin over 7 years ago

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!

Does a person have to have a strong stomach to do a job like yours?

Asked by Jerry over 6 years ago

It helps. But I know good homicide detectives who do it for years and still have a weak stomach and they do fine.

Hi Miss, I'm a student from Australia conducting a Research Project and my question is 'how have forensic methods evolved through the last 40 years to improve the rates of crimes solved'. As a professional, would you be able to elaborate on this?

Asked by Kate Flynn about 7 years ago

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!

Have you ever interviewed a suspect? What is the RIED, PEACE, cognitive, kinesthetic, among other interview and interrogation why is there so many styles???

Asked by Silly Lilly over 6 years ago

I don’t interview suspects—or victims or witnesses.That’s the detective’s job. I’m there to analyze and collect evidence.

Would you be fired if you accidently messed something up and ruined a case? Even if it was a total mess up and no negligence was involved. What if there was?

Asked by Melvin almost 7 years ago

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.