Cotinine can be a marker to detect exposure to nicotine as it has high sensitivity and its half-life is longer than other nicotine metabolites. Testing for cotinine can usually tell whether you smoke ...

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 ...

You can get addicted to nicotine within days of starting to use it. Nicotine affects the brain by releasing dopamine, which ...

About 28% of teens who vape say they use e-cigarette products every day. But parents can influence their children to not ...