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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How Long After Marijuana Consumption Does It Show On Saliva Test?

How long does marijuana shop up in the saliva test? Was about a 12-14 hour window from when I last smoked and when I took the test. I made sure not to press swab against my cheek. Ate dinner afterwards and brushed my teeth and mouthwashed as usual. What should I expect?
Thu, 26 Jun 2014
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Radiologist,  's  Response
Hi,
Thanks for writing in.

Whatever the test used, THC (the active ingredient in cannabis) can never be detected more than 4 to 6 hours in saliva. Most likely you are going to have a negative test of marijuana in saliva. The cut off level is usually 25 ng/ml. Accurate information is given by the manufacturer of the test kit.
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How Long After Marijuana Consumption Does It Show On Saliva Test?

Hi, Thanks for writing in. Whatever the test used, THC (the active ingredient in cannabis) can never be detected more than 4 to 6 hours in saliva. Most likely you are going to have a negative test of marijuana in saliva. The cut off level is usually 25 ng/ml. Accurate information is given by the manufacturer of the test kit.