Welcome Help Please log in to determine if you are eligible to purchase PT Programs. IMMUNOLOGY-SPECIAL, LIMITED - S4 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‑DNA antibody double-stranded 2 Two shipments per year Antithyroglobulin antibody 2 Antithyroid peroxidase antibody/Antithyroid microsomal antibody 2 Ceruloplasmin 2 Haptoglobin 2 Helicobacter pylori, IgG antibody 2 IgD 2 IgG 2 IgG subclass proteins 2 Prealbumin (transthyretin) 2 Total kappa/lambda ratio 2 Transferrin 2 Program Information Eight (0.5 to 1.0‑mL) serum specimens Shipping Schedule Shipment A: February 5 Shipment B: July 1 Guest Log in/Register Customers Who Bought This Item Also Bought IMMUNOLOGY-SPECIAL VIEW DETAILS > IMMUNOLOGY-SPECIAL, H PYLORI IGG VIEW DETAILS >