The Appearance of Xylazine in the United States as a Fentanyl Adulterant Posted on November 6, 2023 By Jeff Teitelbaum Caitlin E. Leconte, BA, and Roopa Sethi, MD Primary Care Companion – CNS Disorders; 2023 Access article Chemistry, Crime Scene Investigation and Reconstruction, DREs / Traffic Safety Resource Prosecutors, Forensic Pathology and Medicolegal Death Investigation, Seized Drugs/Controlled Substances, Toxicology