A member asked:

After not smoking for about 10 months i smoked maybe a pack of cigarrettes in 5 days. how long will it take the cotinine to leave my system?

2 doctors weighed in across 2 answers

Please stop now: After a week, you can claim it is from second hand smoke. Please, please, do not go back to smoking after having done so well. If you need help, think of the people who love you and want you healthy as you go through life, and the evil people who have tried to entrap you in this terrible addiction.

Answered 10/12/2017

2.7k views

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Cotidine: If you test blood, 0. Hair follicle a few more weeks.

Answered 4/2/2017

2.7k views

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