The PCL-5 is a 20-item checklist that can be used both as a diagnostic tool to help determine a PTSD diagnosis and as a standardized measure of symptom change pre and post trauma treatment. It was developed by the Department of Veterans Affairs PTSD Center. Checklist items are aligned with the DSM-5 diagnostic criteria for PTSD. This checklist was adopted as part of the MEMI protocol and is one measure of treatment success. The checklist and detailed instructions for its use can be downloaded by practitioners from the Center via the following link:
https://www.ptsd.va.gov/professional/assessment/adult-sr/ptsd-checklist.asp