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.
I know they utilize most a GC and Mass Spec, a Gas Chromatograph and a Mass Spectrometer, but I've never used either one.
If the stain is still visible, then clearly the semen is still there, so I see no reason why it wouldn't still have DNA in it. There might be a mixture from swabbing up the skin cells as well as the stain.
Hope that helps!
I really don't know. I haven't done DNA analysis or biological analysis like that in over 20 years.
Sorry I can't help!
Personal Injury Lawyer
How do I get out of jury duty?
Antiques Dealer
If you buy an item that turns out to be stolen, do you have to turn it over to the police?
Help Desk Technician
A) Totally unrelated to forensics.B) Already have it so it's not relevant.
I have no idea what you mean by ‘water’ and I don’t see why nighttime would make a difference.
I have no idea.
-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.)