Lawrence R, et al. - The point of this study was to distinguish validated measurement tools for risk assessment and monitoring of chronic non-cancer pain patients being considered for, or recently prescribed, analgesic drugs with abuse potential. The recent opioid misuse measure (COMM) performed best screening for current misuse, established and validated in three studies of acceptable quality. In addition, a small number of tools may accurately predict, or distinguish, opioid misuse. There are none for non-opioid analgesics, where there is a potential need.