In vitro stability of free and glucuronidated cannabinoids in blood and plasma collected in plastic gray-top sodium fluoride tubes following controlled smoked cannabis

@article{Scheidweiler2015InVS,
  title={In vitro stability of free and glucuronidated cannabinoids in blood and plasma collected in plastic gray-top sodium fluoride tubes following controlled smoked cannabis},
  author={Karl B. Scheidweiler and Sarah K. Himes and Nathalie A. Desrosiers and Marilyn A Huestis},
  journal={Forensic Toxicology},
  year={2015},
  volume={34},
  pages={179-185}
}
Blood and plasma cannabinoid stability is important for test interpretation and is best studied in authentic rather than fortified samples. Previous studies employed green-top (sodium heparin) tubes; however, gray-top (sodium fluoride-potassium oxalate) tubes are generally used in forensic cases. Three participants each provided three low and high blood and plasma pools after smoking a 6.8 % Δ9-tetrahydrocannabinol (THC) cigarette ad libitum over 10 min. THC, 11-hydroxy-THC (11-OH-THC), 11-nor… CONTINUE READING

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