Zolpidem Presumptive Screen, Urine Mnemonic U M ZOLP Synonym Ambien Specimen Collection Requirements Collect Random urine in a sterile container Handling Refrigerate (2-8°C) if unable to deliver to the lab within 3 days Preferred Volume 10 mL Minimum Volume 5 mL Transport Ambient (20-25°C) Rejection Criteria If minimum specimen volume is not received, testing will not be performed. Stability Ambient (20-25°C): 3 days; Refrigerated (2-8°C): 10 days; Frozen (< -10°C): 1 year Testing Information Performed 7 days/week Reported 24 hours Method Enzyme Immunoassay Reference Values Reference Values Not Detected < 20 ng/mL Comments Interference is possible; correlate clinically. Contact laboratory to request confirmation if medically indicated. Confirmation is a send out test that will take approximately 5 days. CPT Codes 80307 Last Updated: Wednesday, August 14, 2019 04:56:42 AM Client Services: 503-413-1234