its nearly impossible to test for shrooms since there are so many different types so i wouldnt be worried
I will not flame the above comment but they would test for metabolite of pcilocin the substance in ALL booms.
the standard test normally do not invlole testing for psylocibin/psylocine compounds, however technically speaking there are methods to detect it, and unlike acid shrooms do leave traces in you body for a certain amount of time
i believe psilocybin/psilocin only stays in your system for a couple days tops. i'm not positive though.
When I was a young lad, 16 or so, I saw the form my probation officer filled out for test to be performed on my filled cup, no form of mushroom/psylocibin was even printed on the sheet. Old info...but its all I got.
If it stays in your blood for a couple of days, then it stands to reason that it would show up in your hair for months even years right?