How do you clean your syste of THC to pass a drug test?

You can use home drug test kit and check your self ... order online or look at your local pharmacies most have in stock urine tests and some times saliva tests. Hair home test you need to order online. If you pass using your first morning urine , with highest concentration , you be good for lab test ... not 100% clean but enough to pass fluid testing . Saliva tests generally detect usage for 2-4 days max 7-12 (heavy smoker) , hair tests - 90 days. Urine and blood tests - time depend on your height and weight, physical activity, how much and often you smoke, grade you smoke, etc..