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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 program info below.
Fibrinogen 5
International normalized ratio (INR)* 5
Prothrombin time 5
D‑dimer 2
Fibrin(ogen) degradation products, plasma 1
Fibrin(ogen) degradation products, serum 1
Fibrin monomer 1

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


For multiple instrument reporting options, see the Quality Cross Check program, CTQ.


Program Information

  • Seven 1.0‑mL lyophilized plasma specimens and one 2.0‑mL serum specimens
  • One 1.0-mL liquid plasma specimen will replace one 1.0-mL lyophilized plasma specimen for D-dimer testing in CGL and CGDF in one shipment per year
  • Conventional and International System of Units (SI) reporting offered

Shipping Schedule

  • Shipment A: January 24
  • Shipment B: May 9
  • Shipment C: September 12






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