ALERE TOXICOLOGY ISCREEN® EXTERNAL CONTROLS (88030)

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., iScreen Urine Drug Control Kit, Includes (1) 5 ml Positive Vial and (1) 5 ml Negative Vial (US Only) (Refrigerated - Expedited Shipment Required) (Ships on ice)