Marijuana can be detected in urine for varying lengths of time depending on usage frequency, dosage, and individual factors such as metabolism and body fat. The typical detection windows are:
- Single use: up to 3 days after last use
- Moderate use (about 4 times a week): 5 to 7 days
- Daily use: 10 to 15 days
- Heavy or chronic use: 30 days or more, with some cases reporting detection up to 70 days or longer in extreme chronic use
These urine tests detect THC metabolites, which remain in the body longer than THC itself. The detection window can be influenced by the sensitivity of the test and individual biological factors
. In summary, for most occasional users, marijuana stays in urine for up to about 3 days, but for regular or heavy users, it can be detectable for several weeks or even longer.
