Analytes/procedures in bold
type are regulated for proficiency testing by the Centers for Medicare & Medicaid Services (CMS).
- Three 1.0‑mL human liquid serum specimens
- Serum is from multidonor endogenous pools
- Conventional and International System of Units (SI) reporting offered
Shipment A: March 22
Shipment B: October 4
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.