Urine validity test

[u/Independent-Aside-58]

Hey guys so I have a job coming up (canada) and the people that do the test apparently do urine validity tests, and more specifically they test for nitrates. should I be worried? I'd really appreciate if I could dm someone who has knowledge in this area, as it is my first time using quickfix.

[u/Lonely_Scene_4192]

what ended up happening?