Help Please log in to determine if you are eligible to purchase PT Programs. LIVER-KIDNEY MICROSOMAL ANTIBODY - LKM 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-LKM 2 Two shipments per year Program Information Two 1.0‑mL serum specimens Shipping Schedule Shipment A: April 25 Shipment B: September 26 Guest Log in/Register