I'm not going to bother reading through all these posts, there are a lot of suggestions to exercise it off, and to use detoxify products.
I KNOW for a fact, I used to be a detoxify representative, that the detox products will NOT work if you go through a meditox report, what the state, county, and feds use.
It won't show up positive, but you WILL get an inconclusive report as a result, meaning, you won't get double your money back, plus you essentially got strike one, and will either not get the job, or have to go through another screening.
DEFINATELY go with the synthetic urine if there is any question that you may fail. Quick Fixx costs 40 bucks for a little squeeze bottle, you can put it in your underwear.
I used it twice at my current job, I work for the county.
Don't listen to people who want you to drink crap and use your own pee, it doesn't work.