Help Please log in to determine if you are eligible to purchase PT Programs. URINE TOXICOLOGY CARRYOVER - UTCO Analyte Number of Shipments Benzoylecgonine One shipment per year Delta‑9‑THC‑COOH Opiates Amphetamine Program Information Two 40.0‑mL urine specimens (low and high levels) Designed to screen for instrument sample probe carryover Shipping Schedule Shipment A: May 10 Guest Log in/Register Customers Who Bought This Item Also Bought Clinical Toxicology Testing: A Guide For Laboratory Professionals, 2nd edition VIEW DETAILS >