How do you get rid of stuff in urine after smoking weed?

Wait: The active ingredients in marijuana are fat soluble and are released during abstinence and excreted slowly. So for one joint once only, the wait should be short. For regular use, the wait would be longer. If i used regularly and had to pass a test for work, i'd use a home test kit at intervals.

Time: A positive drug test can result up to a month after smoking marijuana - this depends on how sensitive the test is and how much use has occurred.