Help Please log in to determine if you are eligible to purchase PT Programs. MYOGLOBIN, URINE - MYG Analytes/procedures in bold type are regulated for proficiency testing by the Centers for Medicare & Medicaid Services (CMS). Analyte Challenges per Shipment Number of Shipments Myoglobin, urine, qualitative and quantitative 2 Two shipments per year Program Information Two 1.0‑mL urine specimens Shipping Schedule Shipment A: February 22 Shipment B: July 18 Guest Log in/Register