Nicotine/Cotinine Metabolite Levels-Bld – Ref LabSee reference lab website for details.https://www.labcorp.com/tests/071255/nicotine-and-metabolite-quantitative-plasma-whole-blood-or-serumOverviewSpecimenPerformanceCodesAliases71255,TobaccoSpecimen TypeSee reference lab website for details.https://www.labcorp.com/tests/071255/nicotine-and-metabolite-quantitative-plasma-whole-blood-or-serum