dude, aren't those expensive? I remember paying 20-25 bucks for those tests... Instead get the test strips online. I bought 30 test strips for 20 bucks. This way you'll be able to test yourself everyday.

Oh yeah! make sure to stop exercising 3 days before the test, you don't want those metabolites from the fat running through your system before the test...

(that's probably the reason why your testing positive right now) although exercising is awesome while detoxing, it will ruin you before a big piss test.