Proficiency Testing/EQA / 2024 Surveys / Immunology and Flow Cytometry / Immunology Help Please log in to determine if you are eligible to purchase PT Programs. CYCLIC CITRULLINATED PEPTIDE ANTIBODY - CCP 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 Anti‑CCP 2 Two shipments per year Rheumatoid factor isotypes (IgA, IgM, and IgG) 2 Program Information Two 1.0‑mL serum specimens Shipping Schedule Shipment A: April 2 Shipment B: August 12 Guest Log in/Register