Crystal clear: Purity of street-level methamphetamine samples and methamphetamine-adulteration of other drugs in Los Angeles, 2023-2025

By afschroeder • October 31, 2026

Koncsol AJ, Molina CA, Romero R, Grabill M, Godvin ME, Carrizal J, Contreras M, Arellano O, Villanueva N, Jalayer E, Davila S, Snakeoil S, Smith J, Santamaria CJ, Nuñez L, Okonkwo E, Puri S, Friedman JR, Shover CL. Crystal clear: Purity of street-level methamphetamine samples and methamphetamine-adulteration of other drugs in Los Angeles, 2023-2025. Drug Alcohol Depend Rep. 2026 Oct 7;21:100482. doi: 10.1016/j.dadr.2026.100482. PMID: 42959904; PMCID: PMC13718678.

Tags: Drug Checking, General Internal Medicine, Harm Reduction, Illicit drug supply, Publications, Quantitation, surveillance

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