I have a friend who has a friend who interviewed and got a SA position, but failed a drug screening. Now he can't get a job ANYWHERE.
Best bet: Quit smoking pot for a month.
but that is more of a fallacy since the higher potentcy of pot you are smoking means the longer it lingers in your system. What I would do...
Eat only foods with a high level of antioxidants.
Drink only water.
Do not eat fast food, or anything with high fat.