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National Institute of Justice (NIJ) In an investigation of drug use in over 200 parolees and probationers, the RIAH® hair analysis test proved significantly more effective than urine testing in detecting cocaine, PCP and opiate users. Hair, urine and self-reported drug use information was collected at intake and at three-month intervals during a one-year sampling period. Positive results of urinalysis and hair analysis (using one month-long section) at intake are presented below.
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These data show the advantage of using the RIAH® hair analysis test as an assessment tool when subjects are admitted to a program. The chart below presents the hair / urine comparison during the one-year surveillance period. Subjects were monitored by random urine collection (as many as eight samples per month) and a hair specimen taken every three months.
Subjects Positive By Urine and Hair: One Year Surveillance
URINE HAIR INCREASE IN DETECTION
WITH HAIR (%)COCAINE 6 32 430% PCP 1 6 500% OPIATES 10 15 50% These data show that even frequent, random urine testing was less reliable than the RIAH® hair analysis test for detecting cocaine, PCP and opiate use.
Additional analyses were conducted to determine the patterns of drug use during the three months prior to intake. The RIAH® hair analysis test data were used to identify chronic abusers whose addiction put them at risk for the commission of additional crimes. In cases where the RIAH® hair analysis test data were negative for the three months prior to intake, intensive supervision and inclusion in the comprehensive urine testing program appeared unwarranted. This information could be used to significantly reduce costs and increase productivity.These analyses demonstrate that in all phases, the drug testing program used by the criminal justice system could be significantly streamlined and made more cost effective by using the RIAH® hair analysis test rather than urine testing.
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