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An_248075 posted:
have been smoking for 30 years, marlboro ultra lights 2 pack a day, well now i am quitting for good. so i have not smoked for(get this) 30 days. happy to be past that no more withdrawls thank god. iam going to have weightloss surgery and will have blood test to prove i had quit. (hurt my feelings not to be belived) now my question when they do blood test will nicotine or cotinine show up after this amount time. i truly considered myself to be smoke free was i wrong?
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Jonathan Foulds, PhD responded:
So long as you not actively consumed any nicotine (i.e. no tobacco or nicotine medicines) in the past few weeks you should pass a cotinine test.


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