Moves to crack down on secondhand smoke, similarly, have cited studies that measured blood and urine levels of cotinine, the most important breakdown product of nicotine.
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- 提倡取缔二手菸的行动,也同样引用了测量血液与尿液中的可丁尼(cotinine,尼古丁分解后的主要产物)含量的研究。