High variation in purity of consumer-level illicit fentanyl samples in Los Angeles, September 2023-April 2025.

Shover CL, Koncsol AJ, Godvin ME, Goodman-Meza D, Pardo B, Poimboeuf M, Molina CA, Romero R, Feng J, Friedman JR.

Int J Drug Policy. 2025 Aug 30;145:104977. doi: 10.1016/j.drugpo.2025.104977. Epub ahead of print. PMID: 40886524.