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ACCURACY-BASED VITAMIN D - ABVD
ABVD
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
25‑OH vitamin D (D2 and D3) 3 Two shipments per year

Additional Information

  • The Centers for Disease Control and Prevention (CDC) will establish reference targets using isotope-dilution LC-MS/MS method.
  • Specimens are collected by a modified application of Clinical Laboratory and Standards Institute Guideline CLSI C37-A, Preparation and Validation of Commutable Frozen Human Serum Pools as Secondary Reference Materials for Cholesterol Measurement Procedures; Approved Guideline.

Program Information

  • Three 1.0‑mL liquid human serum specimens
  • Serum is from multi-donor endogenous pools
  • Conventional and International System of Units (SI) reporting offered

Shipping Schedule

  • Shipment A: March 26
  • Shipment B: October 8






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