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

You are testing a swab that has DNA on it, but you don't know if it's saliva/ skin cells/urin/blood.How long does it take to determine what it is and find out who it belongs to?Which steps do you have to go through and how much does it cost pr test?

Asked by Ayden over 8 years ago

Usually we can assume what kind of cells will be on it depending on where it was collected from—if from a pop can, it will probably have saliva and skin cells. From underwear might have semen. If from a dark stain, probably blood. How long it takes depends on the type of analyses done and the type of DNA testing—STR, ySTR, mitochondrial, etc. It will take at least a day or two, and after that it depends on the lab’s backlog. We send our DNA to a state lab and it will take between a month and four months to get the results back. If detectives or prosecutors want it faster and someone’s budget is willing to pay for it, we can send it to a private, accredited lab and pay for a faster analysis. They can do it in as quickly as three days or up to a week or two depending on what you want to pay for. If you want it in a week it will cost a few thousand dollars—something like $600 a sample plus upcharges for expedited service and an overall charge, if I’m remembering correctly. If you want more like three days it will be more like $5000. That’s for the basic three samples—victim, suspect and questioned sample.

You mentioned internships earlier and I was just curious on how to approach them, as I am currently a sophmore in college and taking criminal justice classes, but not chemistry classes yet.

Asked by k101 about 8 years ago

Your advisor should be able to direct you. If not, then call all the crime labs in the area, city, county, state and ask them if they offer internships and how to apply.

Hello, I have some questions that I would feel better if I asked through a personal email if that is alright with you. May I ask for your email you?

Asked by YTK111 about 8 years ago

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

I have an ultraviolet flashlight; orange goggles, & phosphate detector kit. Is this all a crime specialist would use to detect semen? The stains I’m finding are not turning purple, yet I’m sure it’s semen. Is there different method/product I can use?

Asked by PH13 about 8 years ago

It may depend on how fresh the stain is and how fresh your reagents are. Plus just becuase something fluoresces does not mean it’s semen (see answer above).

Well, according to the movie, as fingerprints leave an oily residue, they found traces of R-12 mixed with it. They also said that the uric acid levels in the eccrine gland residue were inconsistent with a guy with active metabolism. Too far fetched?

Asked by R-Mod about 8 years ago

Yes. Unless they have a crime lab more incredibly equipped than any I've ever visited.

I applied for a forensic technician position and I have a online interview to do within the next five days what should I expect?

Asked by DeMario about 8 years ago

I would expect it to be like any other interview--they will ask about your education and experience. If there is any practical experience you have, such as lab analyses, fingerprinting, what programs you used, they may ask specific questions about that such as which software did you use, did you use a mass spec or an electron microscope, etc. If there's things you haven't done, you might say you're aware of the theory of, say, bullet trajectory analysis but haven't had any hands-on experience. That's perfectly okay, no one is an expert in everything. Best of luck!

Okay I am righting a book, and I am looking for a way to describe it from a forensic scientist/analyzer's point of view. the man would die with a caved in skull, holding his brain in one hand, and his wife's heart in the other.

Asked by Paula over 8 years ago

Sorry, I'm having a hard time picturing how what you're describing would be possible.