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C. DIFF, 2 CHALLENGE - CDF2
CDF2
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
Clostridium difficile antigen/toxin 2 Two shipments per year

CMS has clarified that the C. difficile toxin test is not subject to CLIA regulations; therefore, toxin results will not be sent to CMS. Only C. difficile antigen results will be sent.

Program Information

  • Two 0.5‑mL lyophilized specimens, for use with rapid or molecular testing methods

Shipping Schedule

  • Shipment A: April 23
  • Shipment C: December 9