A member asked:

If i have one cigarette once every few weeks, how long will the nicotine stay in my blood?

A doctor has provided 1 answer
Dr. Alan Ali answered

Specializes in Psychiatry

Nicotine: Nicotine has half life of 1-2 hours. Its active metabolite Cotinine remains in blood for 18-20 hours.

Answered 3/21/2015

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Thank

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