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Typical cut-off levels for cotinine detection are: Urine: 200 ng/mL Saliva: 1014 ng/mL Blood: 10 ng/mL However, labs may adjust thresholds depending on the population and purpose (e.g., workplace, clinical, or insurance testing)

Many people will sympathise with what Johnny Depp is saying about his relationship with drugs and alcohol, as it is too familiar to many of us

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Tobacco companies also seek out influencers with a variety of interests to post about trending topics and reach an expansive audience of young people who would otherwise not see tobacco or nicotine content on social media