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

During your High school year what subjects did you take in order to get to where you are today? Also what courses would you suggest to take for someone looking to become a forensic scientist?

Asked by katelin over 7 years ago

Take as many science and then math courses as you can.

Best of luck!

I’m positive that there was a lot of sexual activity in a bedroom. Therefore, there must be evidence of semen somewhere, right? Even if the person tried to be “as clean” as possible there must be drops leftover. How do u scour room to find evidence?

Asked by PH13 almost 8 years ago

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.

How long does “Touch DNA” last? For example, if a person touched a hard surface and no one else ever touched it, how long will that persons “touch” or skin cells be there?

Asked by Jazmin almost 8 years ago

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.

Also this girl touched my phone and phone case, and its been 6 months. I remember cleaning my phone with water and my case with soap. I still feel like after 6 months, this persons dna is on my phone.. I have been using my phone for 6 month

Asked by Helena almost 8 years ago

Bleach will also destroy DNA but of course that may damage items. Soap and water will do.

With respect to drug profiling, could you please explain why it is necessary to have a full understanding of the chemistry of drug synthesis?

Asked by Laura over 7 years ago

I'm sorry but I've never worked in toxicology.

I am conducting a research assignment for my Writing 222 class and wanted to site a source off of my own interview. I was wondering if you would mind answering a few questions through email. If you're interested please email me at jennahr45@gmail.com

Asked by Jennah almost 8 years ago

Sure, I'll email you.

I’m trying to use a dna detection kit (phosphate) to test a stain for semen. How old does the stain need to be for it to turn positive(blue/purple)? The stains could be 6mo. to a year old. on Berber carpet.

Many thanks

Asked by PH almost 8 years ago

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.