from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The major metabolite of nicotine that indicates levels of nicotine intake.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A metabolite of nicotine that may improve mental ability.
from The Century Dictionary and Cyclopedia
- n. A crystalline alkaloid, C10H12ON2, obtained indirectly from nicotine. It melts at 50° C.
Saliva tests for a tobacco break-down chemical called cotinine were used to verify that smokers really had quit.
Menthol cigarettes have a higher level of cotinine, which is an indication of how much nicotine a person is absorbing.
The saliva samples were analyzed for a substance called cotinine, an indicator of tobacco smoke exposure.
"Non-smoking New York City residents tend to have more cotinine, which is a byproduct of tobacco, in their blood than nonsmokers in other parts of the country," Scaperotti said.
The samples were analyzed for a substance called cotinine, an indicator of tobacco smoke exposure.
They assessed the levels of a nicotine by-product known as cotinine in nonsmokers exposed to second-hand smoke outdoors and found levels up to 162 percent greater than in the control group.
In addition to reviewing responses to survey questions about smoking in the home, they also performed tests to check the levels of a contaminant called cotinine, a chemical which is present in the blood of children who have been exposed to the nicotine in tobacco smoke.
And smokers who had high urine levels of both NNAL and another nicotine byproduct called cotinine had more than eight times the risk of lung cancer compared to smokers with the lowest concentrations of these two compounds.
Those with the highest levels of the compound, and another byproduct called cotinine, had a nearly nine-fold increased risk of developing lung cancer compared to smokers with the lowest levels of the compounds.
In most cases, regular smokers will still have nicotine or its by-products, such as cotinine, in their bodies for about 3 to 4 days after stopping.
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