umm rehab? isn't that a high security facility constructed to make sure that you don't smoke? and you get assigned to your own room and shit?

or are you on probation?

anyway when is your piss test?

I was on probation and I had a piss test comming up in a week so I went to HEB bought some niacin off the aisle for 14 bucks took it for 4 days, drank a SHITLOAD of water and passed the piss test. try that considering how soon your next piss test is.