Can a man use a female's urine for drug screenings?

working in a urinalysis lab for the last 10 years i know that there is no way to tell male urine from female urine unless she is on hormone treatments or she is pregnant. thank you. good luck

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Uhh...no. There's a very simple way to tell the difference: shake the bottle. Male urine foams up when you do. Female urine does not. Some labs do it, some don't.

There are also epithelial cells in urine, and there's DNA in them. Very expensive to look for that, though.