Nicotine itself could clear from your body in a few hours, but its byproduct can linger for days or weeks. Most nicotine tests detect cotinine, which can show up in urine, saliva, blood, hair, and ...
Hosted on MSN
How Long Does Nicotine Stay In Your System?
Nicotine has a half-life of about two hours and can stay in the blood for about one to three days. Cotinine, a byproduct of nicotine, has a half-life of 18 hours and can last for several days.
Results that may be inaccessible to you are currently showing.
Hide inaccessible results