Sounds like your in the exact same situation as me and i researched drug testing a ton so heres what ive come up with.

I bought 2 little vials of synthetic urine from whizzinator.com (or the whizzinator website if that isn't it) and 2 heating pads from them also.. what i do is i put a bottle about the size of your palm (like a small lotion bottle or hand creme bottle) in a little pouch that i can fit in my pocket. I also jam a heating pad and bottle of synthetic urine in the pouch and keep it in my pocket. its a little big to have in my pocket every day but its not that bad so if they ever come get you you go to take the test where they put you in a little waiting room with water.. and just pull it out.. pour in the urine powder into the water.. stick a heating pad on the side and put it under ur nuts between ur legs to heat it up... after like 45 min of heating it will be your turn to get tested and just walk in there with it between your legs in to the bathroom and unzip.. reach in.. and empty it.


Also another thing i put in the pouch is 4 asprin cause if u take 4 asprin a couple hours before the test then you can get a false negetive so it comes up negative and you pass. Another thing you can do to be safe is drink lots and lots of water right before you take it (in the waiting room if its available for you like at my school) and when u piss give them mid stream... not the beginning or the end. and try to take a piss at the beginning of the day when u wake up cause the first piss of the day is the dirtiest... sorry im really stoned typing this but hopefully that helps i would recommend doin that.