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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
The College of American Pathologists Accreditation Program requires all accredited laboratories performing non‑waived testing for Troponin I and Troponin T to complete 15 PT challenges per year.