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 ...

If you're starting a new job or applying for health insurance, you may be asked to take a nicotine test. Every time you use tobacco, nicotine — a chemical compound found in tobacco — enters your body.

Eons before Europeans arrived in North America, Native Americans cultivated the tobacco leaf for ceremonial activities and medicinal purposes for use during prayers and rituals. They presented the ...