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BLOOD CANNABINOIDS - THCB
THCB
Analytes/procedures in bold type are regulated for proficiency testing by the Centers for Medicare & Medicaid Services (CMS).

Analyte Challenges per Shipment Number of Shipments
Delta-9-THC 3 Two shipments per year
Delta-9-THC-COOH 3
11-hydroxy-THC 3


Program Information

  • Three 10.0-mL whole blood specimens
  • For toxicology laboratories that perform qualitative and/or quantitative analysis of cannabinoids in blood

Shipping Schedule

  • Shipment A: April 12
  • Shipment B: August 30






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