Quantification of Eight Cannabinoids Including Cannabidiol in Human Urine Via Liquid Chromatography Tandem Mass Spectrometry
Medical and recreational cannabis legalization has highlighted the importance of being able to identify recent cannabis use and impairment. Monitoring minor plant cannabinoids has been proposed to assist in identifying recent cannabis use. Additionally, cannabidiol (CBD) has been proposed for epilepsy, pain, inflammatory disorder, anxiety, and addiction treatment; therefore, monitoring CBD is of increasing clinical importance. However, few methods exist capable of monitoring extensive panels of traditional cannabinoid analytes and minor cannabinoids (including CBD). This chapter details a liquid chromatography tandem mass spectrometry method capable of measuring Δ9-tetrahydrocannabinol (THC), 11-hydroxy-THC, 11-nor-9-carboxy-THC, cannabinol, cannabigerol, tetrahydrocannabivarin (THCV), and its metabolite, 11-nor-9-carboxy-THCV, in urine.
Key wordsCannabinoids Cannabidiol Urine Liquid chromatography Mass spectrometry Pipette tip extraction
This research was funded by the Intramural Research Program of the National Institute on Drug Abuse, National Institutes of Health. Recombinant EBG™ β-glucuronidase from E. coli was provided via a Materials Transfer Agreement between the National Institutes of Health and KURA Biotec. The authors thank Yves-Vincent Duperron (KURA Biotec) for his technical assistance.
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