This study aims to study and implement active referral of heroin users from a syringe
exchange programme to evidence-based treatment for heroin addiction. Patients are randomized
to either a strength-based case management intervention or a control group, while both groups
receive referral to medical investigation for inclusion in substitution treatment for heroin
addiction. The hypothesis is that syringe exchange can be used for referral to effective
treatment, and that a strength-based intervention can increase the number of patients who are
successfully referred and enter treatment.