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Psychemedics Corporation provides testing services for the detection of drug abuse through the analysis of hair samples. The Company's tests provide quantitative information that can indicate the approximate amount of drug ingested, as well as historical data, which can show a pattern of individual drug use over a longer period of time. Psychemedics offers its services to employers for applicant and employee testing, treatment professionals, law enforcement agencies, school administrators, and parents concerned about their children's drug use.