ALERE TOXICOLOGY ISCREEN® EXTERNAL CONTROLS (88033)

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., Professional Cup Urine Drug Control Kit, 10 ml Positive Vial & 10 ml Negative Vial, with Device Holder (US Only) (Refrigerated - Expedited Shipment Required)