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Family Physician
Family Physician, Board Certified MRO
Category: Drug Testing
Satisfied Customers: 1302
Experience:  Medical Review Officer - Physician Trained and certified in drug test interpretation
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How long does marijuana stay detectable in your blood?

Customer Question

How long does marijuana stay detectable in your blood?
Submitted: 2 years ago.
Category: Drug Testing
Expert:  Family Physician replied 2 years ago.
The detection time for THC metabolites in blood following use of marijuana is up to 36 hours. There are of course variations in the detection period based on individual differences in metabolism, dose and the sensitivity of the test - but 36 hours is the typical detection time. Urine tests and hair tests of course have longer detection periods.