Combat the use of additives and adulterants to mask controlled substances with Thermo Scientific™ DRI™ Gravity-Detect™ Specimen Validity Test Controls. Liquid and ready-to-use, these controls can be performed on a variety of general chemistry analyzers. The use of additives and adulterants to mask controlled substances in urine samples is a difficult and ongoing challenge to drugs of abuse screening. We offer the industry's most extensive menu of detection tests. As new adulterant trends sweep through the testing pool, rely on our fast-track product development team to deliver a timely, economical detection solution.