i get drug tested randomly. i know they use a machine like hospitals and prints out results. some headie doses are around think it would be safe to play?
If you think you won't be tested for 3 or 4 days at least, and think it's worth the risk of getting caught, go for it. If you do hope you have a good trip .
If you're talking about acid or shrooms than you probably don't have to worry cuz standard drug tests do not test for those.