Proficiency Testing/EQA / Microbiology / Multidisciplinary Microbiology Help Please log in to determine if you are eligible to purchase PT Programs. CHLAMYDIA/GC BY NAA - HC6 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 Nucleic acid amplification (NAA) 5 Three shipments per year Program Information Three swab specimens and two 1.0‑mL liquid simulated urine specimens Shipping Schedule Shipment A: January 30 Shipment B: May 15 Shipment C: September 18 Guest Log in/Register