Help Please log in to determine if you are eligible to purchase PT Programs. LEGIONELLA ANTIGEN DETECTION - LBAS Analytes/procedures in bold type are regulated for proficiency testing by the Centers for Medicare & Medicaid Services (CMS). Procedure Challenges per Shipment Number of Shipments Legionella pneumophila antigen detection 2 Two shipments per year Program Information Two 0.5-mL liquid simulated clinical specimens Shipping Schedule Shipment A: March 2 Shipment B: November 9 Guest Log in/Register