take an aspirin it really does help for some reason. you should be fine seeing how you smoked last month. also drink lots of water before the test. piss at lease two times before you take the test. take a vitam b pill and take a creatine pill or drink. the extra water is to dilute your piss but they test for diluted piss by checking your vitamin b level and creatine level. if you cant find powder creatine or a pill then just eat hella meat for breakfast. Also piss in the toilet first and then pinch it off and then piss in the cup. everything settles in our blatter so the first part of your piss is the dirtyest. trust me bro with what I just told you I had to pass a piss test to work at a hospital and I smoked like 4 day before the test and passed with these steps.
i smoke upto a week b4 test... all i do is drink nothing but water durring the day.. and at night drink some beer to piss out all the water(for all those under 21 like you dont drink but.... drink energy drinks but not to late unless you like not sleeping.. but if thats true why do u smoke.. lol) anyways... try not to eat much or atleast many fats.. THC is stored in fat cells.. try to sweet it out by running in the heat( i live in middle of the desert so its 98+ next few months... and before you go to take piss make sure u piss once or twice befor pissing for test... NEVER EVER give them ur first piss of the day... always potient with thc... someome mentioned vinager..... well if u wanna use that some ppl say it works... then drink pickle juice. way way easer to drink then pure vinager.... hope that helps...