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.
Who knows? It all depends on where the samples were and how thoroughly the surface was cleaned. If blood was on a glass window and it was thoroughly cleaned, then all of it is probably gone for good. If it's a porous bare wood, then probably not...unless it was thoroughly soaked with a bleach solution. If it's a large area, even if it's cleaned there might still be some left in the nooks and crannies--like in a tile floor, the ceramic may be clean but the more porous grout between the tiles might hold a substance. So there is no way to say it's always possible or it's always not possible. PS Luminol helps you find blood. Christmas Tree stain is used to stain a dried semen sample on a glass slide. It doesn't help you find the semen in the first place.
Share Answer: 
i don't know. It would be worth a try.
Share Answer: 
Because human bodies are in constant flux. Cells slough off, fluids wash out other fluids, but a stain on a piece of cloth doesn't change.
Share Answer: 
I'm sorry, I wouldn't have any idea. You'd have to ask a pathologist.
Share Answer: 
Claims Adjuster
What happens when NEITHER driver is at fault?
CBP Officer
Why are so many customs officers huge jerks?
Personal Stylist & Life Coach
What makes someone qualified to life-coach someone else?
If there was semen on the toilet seat and it was still wet and sticky enough to stick to skin and then be transferred to underwear, then I suppose it would be possible.
Share Answer: 
I'm afraid I'll need some more details than that.
Share Answer: 
I don't really watch any except the ones on the ID channel, and those are mostly about the investigation. But when they do mention forensic evidence, they're accurate.
Share Answer: 
-OR-
Login with Facebook (max 20 characters - letters, numbers, and underscores only. Note that your username is private, and you have the option to choose an alias when asking questions or hosting a Q&A.)
(A valid e-mail address is required. Your e-mail will not be shared with anyone.)
(min 5 characters)
By checking this box, you acknowledge that you have read and agree to Jobstr.com’s Terms and Privacy Policy.
-OR-
Register with Facebook(Don't worry: you'll be able to choose an alias when asking questions or hosting a Q&A.)
Browse Jobs
Host a Q&A
Search
Submit Your Question
Host a Q&A
Last 7
