|Downtime form:||A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery|
Screen includes cocaine only. For full drug of abuse-urine panel, see "Drug of Abuse Screen". If confirmation is needed for cocaine, call the Laboratory at 356-3527. Allow up to seven days for confirmatory results. Confirmation is at an additional charge. Approximate cut-off concentrations (ng/mL) ----------------------------------------- Benzoylecgonine (metabolite) 300 Cocaine 21,200 Ecgonine methyl ester (metabolite) 326,000 Lidocaine No cross-reactivity* Procaine No cross-reactivity* *In general, local anesthetics do not cross-react with the cocaine immunoassay. References: Belson MG, Simon HK, Sullivan K, Geller RJ. The Utility of Toxicologic Analysis in Children with Suspected Ingestion. Pediatr Emerg Care 1999;15:383-387. Bast RP, Helmer SD, Henderson SR, Rogers MA, Shapiro WM, Smith RS. Limited Utility of Routine Drug Screening in Trauma Patients. South Med J 2000;93:397-399. Hammett-Stabler CA, Pesce AJ, Cannon DJ. Urine Drug Screening in the Medical Setting. Clinica Chimica Acta 2002;315:125-135. Schiller MJ, Shumway M, Batki SL. Utility of Routine Drug Screening in a Psychiatric Emergency Setting. Psychiatric Services 2000;51:474- 478. Sugarman JM, Rodgers GC, Paul RI. Utility of Toxicology Screening in a Pediatric Emergency Department. Pediatric Emergency Care. Pediatric Emergency Care 1997;13(3):194-197.