who cares if it picks up thc...how bout just dont drink piss at all. any plastic container will do, i use a travel sized scope bottle, washed a few times of course, fill it tape it in ur pants close to ur nuts, dont throw it away inside the place though bring it back out with u. that only works for like jobs and shit if u got probation ur prety much fucked because some asshole stares at ur cock the whole time u piss