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Instant Drug Testing

While several clinical studies have evaluated instant urine technology, only one study (Yacoubian, Wish, and Choyka, in press) has been conducted with individuals under criminal justice supervision. Yacoubian et al (in press) administered one instant urine test – the OnTrak Testcup-5 – to 136 adult male arrestees in Prince George’s County, Maryland between May and October 2000. With laboratory analysis as the criterion, the OnTrak Testcup-5 was 100% sensitive for opiates, 98% sensitive for marijuana, 86% sensitive for cocaine, and 73% sensitive for phencyclidine (PCP). That study was limited, however, because only a small number of male arrestees with relatively low rates of drug use were interviewed. Of the 136 arrestees sampled, only four opiate-positives and 26 cocaine-positives were detected by laboratory urinalysis.