Wound-associated agents in the unregulated drug supply: Evidence from a statewide drug checking program

Original research
by
Martin, Emily M. et al

Release Date

2025

Geography

USA

Language of Resource

English

Full Text Available

No

Open Access / OK to Reproduce

No

Peer Reviewed

Yes

Objective

The aim of this paper is to examine known and potential wound-associated agents’ (xylazine, levamisole, medetomidine) prevalence in Maryland's unregulated drug supply.

Findings/Key points

Xylazine was detected in 33.4 % of samples and primarily co-occurred with fentanyl; heroin and related compounds; and other opioids, stimulants, and anesthetics. Xylazine's prevalence decreased over time and varied geographically. Levamisole and medetomidine occurred in 1.9 % and 0.7 % of samples respectively with no significant co-occurrence.

Design/methods

Using data from Maryland's statewide drug checking program, Rapid Analysis of Drugs (RAD), this paper discusses samples that were voluntarily provided at participating syringe service programs and analyzed at the National Institute of Standards and Technology between October 2021 and October 2023 (N= 2,210). We calculated prevalence and chi-square significance to assess co-occurrence of wound-associated agents and other substances and evaluated xylazine's prevalence over time.

Keywords

Drug checking
Harm reduction
Illegal drugs
Overdose
Xylazine