if its just one piss test you have to pass, might as well quit for 20 days and drink lots of cranberry juice and shit, if you fail the first time, make an excuse like it was a friends birthday and it came up, but you're not an avid smoker and you'll pass the next one once your system's clean...but man, that would be a bummer to miss out on a few grand because you're pee wasnt real and they spotted it...hmmm