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Monday, September 1, 2014
Smoking and Tobacco
How long does nicotine and cotinine stay in the body`s system (1 wk, 1 mo, 6 mo)? Also, can cotinine tests be purchased over-the-counter?
A question very similar to yours has been previously answered, and you will find that information linked below. I would add to that: the half-life of nicotine is 30-60 minutes.
Cotinine tests are available on the web (Google: "cotinine test"); however, I cannot attest to their accuracy.
I obviously can't be sure, but I wonder if you are asking because you'd like to duck on a test to be given by an insurance company or your employer while you keep smoking. If that's the case, I've got a better idea. Stop trying to fool them -- and yourself -- about your addiction. Call 800 QUIT NOW (784-8669) and talk to your doctor. You can do this. They can help.
Rob Crane, MD
Clinical Associate Professor of Family Medicine
College of Medicine
The Ohio State University