Hey everyone, I am a non smoker who has a pre-employment drug screen coming up 4 days from now. Yesterday I was at a friends house and took one puff of their cigarette, I had never tried them before and I wasnt thinking about this drug test coming up. Now I realized that the test may screen for nicotine and I am extremely worried that I will fail my test due to this. Is one puff enough to show up on a drug screen? I don't ever use tobacco or nicotine, this was a one time poor decision. Thanks so much, Nicky