Man, listen to an old head. Sure-jell is the best way.But, if it's for a job that is regulated by OSHA, they will use a DAP-7 test on you. This test looks for 7 different drugs/modifiers, and also tests ***, creatine, and looks for hypochlorites (bleach drops).
If you mix 1/2 pack of sure-jell in a quart of water, and drink one a day for 3 days before, and another gallon of pure water before you go, you will be super clean.
A pack of jell and a gallon of water an hour before you go will pass most low-qual tests.
But make sure that you down a Tablespoon of creatine powder each day during the flush process.
And you need to piss many times before you go take the test, don't let it sit in your bladder for an hour. Piss outside, and go in and chug from there fountain in order to pee, you need fresh as possible.
I piss for my PO every 2nd Friday //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif I should own stock in Sure-Jell by now...