A member asked:

How long does cotinine stay in your body?

A doctor has provided 1 answer

Depends on what is : Tested. Urine is the usual substance tested and nicotine metabolite can be detected for 3-5 days after exposure to tobacco. Cotinine stays for much longer in nails and hair. See this article for more info. http://www.ncbi.nlm.nih.gov/pmc/articles/pmc2953858/.

Answered 5/1/2019

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