A 42-year-old member asked:
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how long does marijuana stay in the bloodstream?

1 doctor answer
Dr. Leonard Lado
31 years experience Psychiatry
Thc in bloodstream: Hunault et al 2000 calculated that high dose (23 %) marihuana can stay in your blood stream up to 8 hours. However cannabis users can have products of metabolism circulating and excreted for prolonged periods of time. Cannabis users are usually identified through detection of 11-nor-9-corboxy-delta9-tetrahydrocannabinol (thccooh) in urine. Thccooh may be detectable up to 3 months.
Answered on Feb 7, 2015
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