Psychemedics Corp is engaged in providing testing services for the detection of drugs of abuse through the analysis of hair samples. The company operates through a single segment of drug testing services which include training for the collection of samples and storage of positive samples for its customers for an agreed-upon fee per unit testing of samples. The testing methods of the company utilize a patented technology that digests the hair and releases drugs trapped in the hair without destroying the drugs. Geographically it generates the majority of its revenue from the United States.