Proficiency Testing/EQA / 2024 Surveys / Toxicology Help Please log in to determine if you are eligible to purchase PT Programs. NICOTINE AND TOBACCO ALKALOIDS - NTA 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 Cotinine 3 Two shipments per year Nicotine 3 Program Information Three 25.0‑mL urine specimens Designed for laboratories that qualitatively and/or quantitatively test for anabasine, cotinine, and/or nicotine in urine Shipping Schedule Shipment A: April 23 Shipment B: October 29 Guest Log in/Register