2 doctors weighed in:
How long does marijuana stay in the bloodstream?
2 doctors weighed in

Dr. Leonard Lado
Psychiatry
1 doctor agrees
In brief: 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.

In brief: 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.
Dr. Leonard Lado
Dr. Leonard Lado
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