Help Please log in to determine if you are eligible to purchase PT Programs. SWEAT ANALYSIS - SW2 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 Chloride 3 Two shipments per year Conductivity 3 For method compatibility, see chart. Program Information Three 5.0‑mL simulated liquid human sweat specimens Shipping Schedule Shipment A: January 21 Shipment B: July 13 Instrument Program Code Materials Included   SW1 SW2 SW4   Orion direct electrode ✓     Precut 2-cm diameter Whatman filter papers Wescor Macroduct™ and Nanoduct® Systems   ✓   22-guage blunt-tipped needles All other methodologies     ✓ No additional materials provided Guest Log in/Register