Urine Drug Control Kit Includes: 5mL Positive Vial & 5mL Negative Vial (Refrigerated - Expedited Shipment Required) (Ships on ice)
Checks for the validation of test performance and expected results. Designed to work with any of our urine drug screens. In both 5mL and 20mL options, the liquid solution vials are convenient for any office. Refrigeration is required.