Not just fentanyl: Understanding the complexities of the unregulated opioid supply through results from a drug checking service in British Columbia, Canada.

Gonzalez-Nieto P, Wallace B, Kielty C, Gruntman K, Robinson D, Substance Staff, Arredondo Sanchez Lira J, Gill C, Hore D.

Int J Drug Policy. 2025 Apr;138:104751. doi: 10.1016/j.drugpo.2025.104751. Epub 2025 Feb 28. PMID: 40022963.