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A member asked:
I smoked 1 cigarette 14 days before an upcoming blood test for cotinine. smoked 0 cigarettes 2 months prior. will test be negative for cotinine?
A doctor has provided 1 answer
Yes: cotinine is positive for a few days as most after one cigarette, depending on whether it is a blood test, oral swab or urine test, but after discontinuing smoking, even oral swabs (which appear to be the most sensitive) will be negative by 5 days later.
Answered 1/18/2019
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