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How Long Does Marijuana Stay in the User's Body?

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Updated November 21, 2007

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Question: How Long Does Marijuana Stay in the User's Body?
Answer: THC in marijuana is strongly absorbed by fatty tissues in various organs. Generally, traces (metabolites) of THC can be detected by standard urine testing methods several days after a smoking session. However, in heavy chronic users, traces can sometimes be detected for weeks after they have stopped using marijuana.

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