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Richmond, VA
A 16-year-old female asked:

How long does marijuana stay in your saliva. ? i smoked about 4 days before my mouth swab test will i pass ?

1 doctor answer2 doctors weighed in
Dr. Paul Williams
Family Medicine 37 years experience
THC saliva tests: Detection time can be up to 72 hours - possibly longer with chronic use-30day. Any positive tests will be confirmed with a much more specific test looking for the actual THC or metabolite molecules. However to be positive - certain levels must be present for the test to be "Positive". Best advice - don't use it for at least a week prior and if worried - invest in a test you can buy in a store
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Last updated Dec 12, 2020


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