Help Please log in to determine if you are eligible to purchase PT Programs. HLA ANTIBODY SCREEN/ID & CROSSMATCH - MXE 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 Antibody screen (Class I/Class II) 4 Three shipments per year Antibody identification (Class I/Class II) 4 Program Information Four 0.25-mL plasma specimens; must be ordered in conjunction with Survey MXB or MXC Shipping Schedule Shipment A: March 30 Shipment B: July 27 Shipment C: October 16 Guest Log in/Register Customers Who Bought This Item Also Bought Histologic Preparations: Common Problems and Their Solutions VIEW DETAILS >