Help Please log in to determine if you are eligible to purchase PT Programs. HLA ANTIBODY SCREEN/ID & CROSSMATCH - MXB 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 Crossmatching (Class I/Class II) 8 Three shipments per year Antibody screen (Class I/Class II) 4 Antibody identification (Class I/Class II) 4 Program Information Four 0.25-mL plasma specimens; two (approximately 5-6 x 106 cells) purified blood lymphocyte specimens. Shipping Schedule Shipment A: March 29 Shipment B: July 26 Shipment C: October 15 Guest Log in/Register Customers Who Bought This Item Also Bought Histologic Preparations: Common Problems and Their Solutions VIEW DETAILS >