Norcarfentanil: carfentanil misuse or remifentanil treatment?

ConclusionsIn the first two cases, norcarfentanil was present as the metabolite of carfentanil, whereas in the last case, norcarfentanil was the metabolite of remifentanil. Without the identification of remifentanil, confusion could occur, and norcarfentanil could be attributed to carfentanil misuse.
Source: Forensic Toxicology - Category: Forensic Medicine Source Type: research