How long is nicotine detectable in the bloodstream?
On One Hand: Body Metabolizes QuicklyThe American Heart Association notes that the estimated half-life of nicotine in the blood is two hours because the liver and kidneys rapidly metabolize and excrete the substance. Medically, most nicotine is gone from the body within 72 to 96 hours, according to SmokeHelp.org, unless it is absorbed through second-hand sources.On the Other: Trace Amounts LingerBlood tests can detect small amounts of nicotine and nicotine byproducts for up to a month after the last cigarette is consumed, as indicated by SelfhelpMagazine.com. The reason for this lingering effect is because the body converts nicotine to cotinine, which is not cleared as quickly by the liver.Bottom LinePeople metabolize nicotine at different rates. How Stuff Works notes that some individuals even have an enzyme that allows nicotine to remain in their bodies longer. The length of time and frequency of smoking also affects nicotine buildup.
