Synthetic Opioid. An active metabolite of Naltrexone. Naltrexone is an opioid antagonist used primarily in the management of alcohol dependence and opioid dependence. Naltrexone should not be confused with naloxone nor nalorphine, which are used in emergency cases of opioid overdose.
Urine. Volume: 0.5 (5) mL. Stability: Room Temperature – 1 Day, Refrigerated – 7 Days