Analysis of the Illicit Opioid U-48800 and Related Compounds by LC–MS-MS and Case Series of Fatalities Involving U-48800 Posted on February 1, 2023February 1, 2023 By Becky Carter Melissa F Fogarty, Amanda L A Mohr, Donna M Papsun, Barry K Logan J Anal Tox; 46(1); 2022 Access article Chemistry, Crime Scene Investigation and Reconstruction, DREs / Traffic Safety Resource Prosecutors, Forensic Pathology and Medicolegal Death Investigation, Seized Drugs/Controlled Substances, Sexual Assault / SANE, Toxicology