ArticleHarm reduction journal2026
Real time, on-site drug checking in low-threshold housing communities.
Article in Harm reduction journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundIn recent years, Boston has attempted to increase housing options and reduce overdose risk through the implementation of harm reduction housing (HRH) sites. Despite numerous harm reduction resources available to HRH residents, drug checking services are absent. Studies suggest that drug checking may prevent negative experiences associated with unexpected adulterants. Drug checking offers a window into concerning supply shiftsand helps monitor disruptions in the supply due to environmental changes, such as encampment clearings. Few studies have explored drug checking's application in housing programs. The establishment of the Massachusetts Drug Supply Data Stream, a statewide community drug checking program, allowed us to pilot real-time drug checking at HRH sites.
methodsFrom September 2023 to February 2024, we administered surveys to 106 HRH residents. From September 2023 to March 2025, we conducted longitudinal interviews (baseline, 3-month, 6-month) with a subset of 28 survey respondents. In response to drug supply shifts and resident demand, starting on May 20, 2024, we implemented real-time drug checking services at three HRH sites located in Boston. Residents were asked to provide approximately 5 mg of their remnant substance in order to receive immediate test results using FTIR spectroscopy and immunoassay test strips. Survey responses pertaining to drug checking provision and real-time, on-site drug checking sample results were analyzed using descriptive and bivariate statistics. Longitudinal interviews and field notes collected during real-time, on-site service provision were analyzed to further contextualize resident experiences.
resultsResident engagement with drug checking services was considerable, with fifty-five drug samples collected across nine site visits over three months. The services generated an increase in xylazine awareness among residents and provided chances to address concerns about the changing drug market amid heavy policing. Engagement with residents confirmed the need for on-site drug checking alongside other provided harm reduction services, and a consensus vocalized concerns with the local drug supply.
conclusionsReal-time, on-site drug checking in low-barrier housing programs is a promising harm reduction approach for detecting shifts in the drug supply and can complement transitional housing interventions. Residents engage with these services with the intention of intervening upon personal, community, and market-level norms.
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