Welcome Help Please log in to determine if you are eligible to purchase PT Programs. BK, CMV, AND EBV VIRAL LOAD - VLS 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 BK viral load 2 Two shipments per year CMV viral load 2 EBV viral load 2 Program Information Six 1.0‑mL EDTA plasma specimens Shipping Schedule Shipment A: January 23 Shipment B: June 19 Guest Log in/Register Customers Who Bought This Item Also Bought CMV VIRAL LOAD CVL VIEW DETAILS >