Inspired by the Australasian triage system, a regional psychiatric triage system was introduced in the psychiatric emergency units (PEUs) in Copenhagen in 2011. Our aim of the study is to determine the characteristics of the patient according to the defined triage criteria and check if this is in accordance with recommendations. A random 10% data sample was obtained throughout 2012 in three PEUs of Copenhagen. Triage category, demographic, social and clinically relevant variables were collected. A total of 929 contacts were registered. We found significant associations between triage category and several clinical parameters. Time of visit was correlated to diagnoses. The results indicate that use of the new triage system in emergency psychiatry has facilitated urgency categorization, reduced waiting time, and optimized clinical decisions. These goals are important clinical implications of the service in PEUs. The need for PEUs out-of-daytime (when all Community Mental Health Centers are closed) has also been demonstrated.