I've done some research on this, and mostly it says "no," for the standard drug test. However, I'm on probation and they take comprehensive durg tests. So, if the active ingrediant in mushrooms does show up in urine, how long does it stay in your system? Will Dillution methods used for Marijuana clean my system faster? Thanks.
Although rare, it is possible to test for psilocybin in urinalysis tests. They stay in your piss for about 3 days, if I remember correctly, but I'm on probation too, and I wouldn't risk it. That's just me, though.