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CARDIAC MARKERS, ISOENZYMES & TROPONIN I - CRTI
CRTI
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
CK‑MB, immunochemical 5 Three shipments per year
CK isoenzymes (CK‑BB, CK‑MB, CK‑MM), electrophoretic 5
LD1, LD2, LD3, LD4, LD5, electrophoretic 5
LD1/LD2 ratio calculation and interpretation 5
Myoglobin 2
Troponin I 5
Troponin T 5


Program Information

  • Ten 2.0‑mL liquid serum specimens

Shipping Schedule

  • Shipment A: March 15
  • Shipment B: June 28
  • Shipment C: October 4






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