Single Analyte Urine DAU Control (5 m L || Norbuprenorphine, Level II control || For In Vitro Diagnostic Use Only. store at 2 - 8 degrees C. || Contents: Contains 13 mg/Ml of Norbuprenorphine in human urine with sodium azide as a preservative. || Manufacturer: || Lin-Zhi International, Inc. || 670 Almanor Ave. || Sunnyvale, CA 94085 || The Norbuprenorphine Drug of Abuse (DUB) Positive control is used as assayed quality control material to monitor the precision of the Lin-Zhi International, Inc. Buprenorphine Enzyme immunoassay on the Synchron clinical analyzer. It in intended for the qualitative and semi-quantitative determination of norbuprenorphine in human urine.