to do a home test run out to your local drugstore and get a home test. They are pretty easy to use, get a small paper cup and fill it up with a midstream sample of urine, dip the testing strip into the urine for abourt 10-15 seconds, the sample will travel through the strip and the panel will usually be the kind that has two lines, one for the control and one for the sample; if you get two lines you are in the clear, one line you are positive for MJ. It usually does not matter how dark the line is in the testing region; even a faint line should be considered a negative result.

Cheers.