PDF - http://www.cesar.umd.edu/cesar/pubs/20060201.pdf
Eric D. Wish, Ph.D.; Cheryl Rinehart, B.A., Margaret Hsu, M.H.S.; and Erin Artigiani, M.A.
"Trends in the drugs detected in urinalyses from offenders have been found to provide advance warning of drug epidemics in the greater community. Is it feasible to establish a statewide drug monitoring system using available urine specimens from probationers/parolees? Does the DPP standard five drug screen detect most drug users?"
