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cotinine

cotinine

1 9.9
A substance made in the body when nicotine breaks down that shows if someone uses tobacco
  • noun
  • /kəˈtɪn.iˌn/
  • Specialized
: cotinina
  • Cotinine, a metabolite of nicotine, was measured in serum from 238 mothers at 18 weeks' gestation.
  • serum cotinine
  • cotinine levels
  • cotinine concentrations

Examples

  • The researchers measured the cotinine levels in the participants' blood to determine their tobacco use.

  • The home environment appears to be the most important predictor of the cotinine levels in children.

    Academic text (2015)
  • Children younger than 3 years were excluded because they were not eligible for serum cotinine testing.

    Academic text (2012)
  • In a small number of women who reported they did not smoke, substantial concentrations of cotinine in serum were detected.

    Academic text (1999)
  • So what exactly was the cotinine level of the people who weren't hospitalized?

    Blog text (8)
  • A significant correlation was found between the duration of exposure to tobacco smoke and serum cotinine concentrations.

    Academic text (2001)
  • Our study identified younger children as more exposed than older children to phthalates (except MEP), cotinine, and mercury.

    Academic text (2015)
  • Further, we assessed maternal smoking with a sensitive assay for cotinine, a well-validated biomarker for tobacco smoke.

    Academic text (2012)
  • A higher concentration of cotinine in urine indicates recent exposure to nicotine from tobacco products.

  • Doctors often use cotinine tests to check if patients have been smoking or exposed to secondhand smoke.

Surface Forms

cotinine singular
cotinines plural

Etymology

The word cotinine comes from nicotine, the tobacco chemical, plus the common chemical ending -ine. So, cotinine is the form nicotine turns into in the body, which is why doctors measure it to see recent tobacco use.