you'll need to go excersize ALOT, drink ALOT of water, a friend of mine (whos a girl btw) told me about her having to take a drug test when she was going to have surgery or something, said she ate alot of cashews and she passed, but showed up she was Preggo lol which was funny cuz she had her tubes tide and all that good stuff to insure that she couldnt have another kid. you could also try Niocine, take like 10 a couple days before the test, drink alot of water, ( stuff makes u get hott tho) there are alot of ways to do it too, u could get a shampoo bottle ( travel size) and get someone to pee in it with clean piss and just before u get the the place, turn ur heat on and set it in the dash, or keep it tucked under ur nut sack. so it stays the rite temp. or go out and get Omni, Drink the whole thing, drink 3 more bottles of that, piss 3 times, and then when u pee do the mid stream, not the beginning or the end of the pee. good luck bro