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Urine testing is the most commonly used method because it is: non-invasive cost-effective Reliable for detecting cotinine Nicotine vs Cotinine: Why It Matters Many people misunderstand this key distinction

While Philip Morris first launched IQOS in select Asian markets more than five years ago, the technology only first showed up in the U.S

[DOI] [PubMed] [Google Scholar] 52.Zhang Y., Zhang J., Zeng Y., Liu C., Wang K., Zhe W., Liu J., Liao T

Nicotine transport in a human choriocarcinoma cell line (JAR) J Pharm Sci

(2026a)

2-Hydroxylation of nicotine was shown to produce 4-(methylamino)-1-(3-pyridyl)-1-butanone with 2-hydroxynicotine as an intermediate