you may be luckey if you can dilute by drinking water and exercise to get it out of your system. Unfortunately THC hangs on to the fat cells quite awhile. I have tested myself in the past, now I use to smoke regularly when I did and it took almost 40 days to get it out of my system. Best thing I ever did was buy a Urinator which is battery operated with 9 volts and ST John's synthethic urine when I am going to be tested. Unit keeps it at 98.7 for about 4 hours and the synthethic pee is used to calibrate lab equipment. Has worked every time. Just expensive for the equip, after that the urine isn't too bad. In a rush, I would try to drink a lot of water up to test day and exercise like mad, stay away from fatty foods...