If someone has been clean off drugs and then took 2-3 hits of swag non quality weed, how long would that take to get out of your system? The person weighing at 120lbs with high mebtabolism, has drank GALLONS of water, cranberry juice and tea daily and has took saunas and exercised. Also before when takin the UA drank 3 liters of water, almost a gallon. The urine was very clear like. Negative or positive? And if it was positive it definitley would show very very low levels of THC. ???????