A member asked:

I have a bllod test for nicotine and cotinine wednesday 11/22/2017. can i pass it with now smoking for 2 days?

3 doctors weighed in across 2 answers

Nicotine: Nicotine will not be detected in a blood test after not smoking for 3-4 days. Cotinine is not detectable after 1-10 days. Neither will be detectable in urine tests after 4 days.

Answered 9/4/2018

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Dr. Heidi Fowler answered

Specializes in Psychiatry

Probably not: “When someone stops using tobacco & nicotine products, it can take more than 2 weeks for the blood level of cotinine to drop to the level that a non-tobacco user would have & several weeks more for the urine level to decrease to a very low concentration.” REF: http://labtestsonline.org/understanding/analytes/nicotine/tab/test/

Answered 8/28/2019

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