There are many suggestions around the Web on how you can do it fast and safe. Unfortunately, not all of them work best detox for thc imagine your disappointment when you test positive after being 100 percent sure that you are completely clean. You may think that when the effects of marijuana subside, there is no trace of it left in your body. Well, you are wrong. Its chemical remnants are still inside you. There are many ways to detect marijuana metabolites in a person through their blood, hair, saliva, and urine. Urine tests are the most popular way for companies to control their stuff. Keep in mind that chronic stoners accumulate more THC with each high time. This large amount of cannabinoids can be detected even after a couple of months after quitting using cannabis. If you are not a regular smoker, weed metabolites should be gone from your system in a couple of days.