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

What has been discovered or invented by you or other people who work in the field of forensics?
What is something I could tell my class and teachers that would surprise them about forensics?

Asked by Ella almost 5 years ago

"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!

How long does saliva DNA stay on an object? In other words, for how long the DNA is detectable?

Asked by Aj almost 5 years ago

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.

What level math do you actually need and use?

Asked by Elizabeth G. about 5 years ago

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!

What would you say is the best way to get into forensic science? I’m either thinking of going into a forensic science course or doing a chemistry/ biochemistry Uni degree?

Asked by Katie over 5 years ago

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.

Is it ever weird cutting into and doing pretty nasty things to a dead person?

Asked by Jason over 5 years ago

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.

My question to you is how are the audits done like in the state where they are auditing votes? What do you think the results will be?

Asked by Forrest over 4 years ago

I’m sorry but my job has absolutely nothing to do with auditing voting machines. I have zero expertise in that area.

What is the point in giving a poly graph if it’s not even admissible in court except for in specific circumstances? (Usually if only the defense and prosecutors agree)

Asked by Zarah over 5 years ago

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.