It varys between a couple days to a couple months, but if you haven't smoked in at least 48hours, I suggest the q-Carbo drink. That is, only if it is one of the test that they stick the little stick in your urine. If they are sending it away to a lab, good luck. You can get the drink from GNC or any natural market store or if you have time to wait for shipping, you can get it from
http://420supplystreet.myshopify.com/. 10% off with the code: LIVEGREEN