Ok so I used heroin yesterday but I was 100% clean before that. My future career called today and said I need to come in tommorow and take a drug test. I am pretty skinny with a very fast metabolism. Is it possible for me to pass this test or should I just go buy one of those flushing/masking drinks. I been a heroin addict for five years and never once had anykind of drugtests required and now right after i get out of rehab I got one wtf lol.

I know you were likely not expecting this, but you always need to be ready, specifically when starting a new job/career.