Results: Even within a given institution, supervision is performed individually different with respect to distance to the genital, direct or indirect view, and accuracy. Supervision evokes serious psychological stress to both patient and staff. The marker system requires less working hours.

Schlussfolgerung: Aus der Sicht der handelnden Kontrollpersonen verbessert das Marker-System die Drogenkontrolle auf allen Ebenen. Die Beschäftigten haben mehr Zeit, ihren eigentlichen Tätigkeiten nachzugehen, die Sicherheit gegenüber Manipulationen wird größer und die psychische Belastung wird auf beiden Seiten deutlich reduziert.

Purpose: Drug testing by means of urine samples is part of the standard operating procedures in a wide range of related settings. In order to avoid sample manipulation by the client, samples are almost collected under direct observation. However, the supervision procedure is handled differently in different countries and settings leading to varying degrees of precision. Moreover, supervision seriously evokes psychological stress to the sample donor and, probably but still not evaluated, to the supervising staff. An alternative control method is the polyethylene glycol (PEG) urine marker system, which excludes the need of supervision during urination.

Aims: IIn the present study we evaluated by means of questionnaires a) the concrete procedure of supervised urine sample collection in a Forensic Psychiatry and b) the beliefs of supervising staffs regarding supervision and marker control with respect to safety, economy, and psychological stress.