The urine tests do not check for gender, but make sure your girlfriend is clean.

Just to add a bit to Slantedeyes post, also make sure your GF hasnt ingest a large amount of fluids prior to giving you her sample, to avoid a possible "diluted" result and subsequent re-test.
Burnt Toast Reviewed by Burnt Toast on . LabCorp procedures and SEX I have to provide a sample for a LabCorp screen. It is going to be conducted at one of thos employment agencies. It is called "Express Personnel" Anyway, I have a convenient donor for subbing. My girlfriend. She has never even touched pot. So, I guess what I need to know is: Can a man substitue a womans urine? She's not pregnant or anything goofy or out of the norm. And, from personal experience, can anyone say whether or not this kind of screening is supervised? Also, if I crotch the Rating: 5