ok drink 1 gallon warm water. it hits you alot faster, try not to drink it all at once you'll throw it up. then take some b12 or a red bull has alot in it. that will trun your piss bright yellow. now you can buy your own drug test at any drug store sells them you have to look. there like 20 bucks. i like to test myself before it go, bc if you know your going to pass you anit all nervous and shit. and trust me they look for that. i've done alot of testing on myself so i know what my body can take. good luck