I spoke to a pharmacist(friend) and he said that most places in the US are starting to test immediately if it has hormones in it (male/female) fake/real.
Your pharma "freind" doesnt know what he is talking about. Labs practicing in the States are prohibited from performing any form of hormonal/genetic analysis on samples collected for a drug test, unless the donor gives written authorization on an entirely seperate and detailed consent form. Labs can only perform the validity tests outlined in the DHHS regulations and apply the criteria for a "non-human" (aka 'substituted') sample as outlined in the DHHS regulations.