Help Please log in to determine if you are eligible to purchase PT Programs. RENIN AND ALDOSTERONE - RAP 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 Aldosterone 3 Two shipments per year Renin 3 Program Information Three 2.0‑mL lyophilized plasma specimens Conventional and International System of Units (SI) reporting offered Shipping Schedule Shipment A: April 27 Shipment B: September 21 Guest Log in/Register