A member asked:

How many menthol cigs can you smoke before it shows up positive for nicotine?

A doctor has provided 1 answer
Dr. G. Wen answered

One is enough: One is enough to make it positive.

Answered 1/20/2014

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A member asked:

How long will nicotine show in a urine test after last cigarette?

A doctor has provided 1 answer