These are the steps I follow every time I’m due for a drug screen:

– Abstain from inhaling or ingesting marijuana (obvious enough).

– Eat a clean diet that is low in carbohydrates and sugar – A diet like this forces the body to metabolize fat (where THC metabolites are stored) instead of glucose.

– Drink lots of water and green tea – Having healthy amounts of both water and green tea will lower THC metabolite levels through their diuretic properties and cleansing of the kidneys. Additionally, hydration is a key factor for a robust metabolism.

– Exercise – This will speed up a person’s metabolic rate, burn THC metabolites and remove waste.

– Get a reputable detox kit like the one from totalcleanse.co ; I’ve used them successfully a few times now.