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COAGULATION-LIMITED - CGL
CGL
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
Activated partial thromboplastin time 5 See Samples tab below.
Fibrinogen 5
International normalized ratio (INR)* 5
Prothrombin time 5
D‑dimer** 2 per year
Fibrin(ogen) degradation products, plasma** 2 per year
Fibrin(ogen) degradation products, serum** 2 per year

*Participants reporting INR results will receive a special evaluation to assess the INR calculation.

** D-dimer and FDP are shipped with the CGL‑A and C mailings


Program Information

  • Five 1.0‑mL lyophilized plasma specimens; three shipments per year;
  • One 1.0‑mL plasma specimen; one 1.0‑mL serum specimen; two shipments per year

Shipping Schedule

  • Shipment A: January 28
  • Shipment B: May 13
  • Shipment C: August 26




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