I did this before and passed when I held a temp job with the state but this time I am really worried....so bottom line is I am screwed right? BTW How long does it take Lab Corp to contact you back with having a positive result? They did an eCup test which they put it in the "tester" as I was walking out...I really hope & pray I pass this...my friend is a heavy smoker & smoked 36 hours before his test, weights about 115lbs more than I do, drank the same stuff & passed 2 different tests with it...another sleepless night