So currently I got a job that doesn't test, which is cool. Still haven't started smoking yet though because the job SUCKS. So ive been looking around and got an interview under a staffing firm for a Fortune 500 company that apparently does freaking hair test for pre employment. Not sure if the staffing firm will actually do hair since its technically only their true employees getting this, but just to be safe, how long do these hair tests truly test back for? I haven't smoked in 4 months. I heard the cutoff is 90 days but then other people say 6 months+. Whats the real answer?