Proficiency Testing/EQA / 2024 Surveys / Histocompatibility Help Please log in to determine if you are eligible to purchase PT Programs. MONITORING ENGRAFTMENT - ME 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 Stem cell monitoring engraftment 5 Two shipments per year Program Information Seven 0.5‑mL whole blood specimens Designed for laboratories supporting stem cell transplant and laboratories monitoring chimerism after organ transplantation Shipping Schedule Shipment A: February 13 Shipment C: August 6 Guest Log in/Register