Abstract
Objectives. To determine the percentage of US outpatient substance use treatment facilities that offer HIV preexposure prophylaxis (PrEP). Methods. We used a retrospective cross-sectional design with data from the National Substance Use and Mental Health Services Survey, which was administered to directors of US outpatient substance use treatment facilities in 2021. We evaluated the percentage of outpatient substance use treatment facilities offering PrEP and factors associated with the likelihood of offering PrEP. Results. We included 12 182 outpatient substance use treatment facilities. Of these, 637 (5.2%) offered PrEP. Offering HIV treatment (adjusted odds ratio [AOR] = 45.3; 95% confidence interval [CI] = 36.0, 56.9) and offering programs for LGBTQ (lesbian, gay, bisexual, transgender, and queer or questioning) people (AOR = 1.3; 95% CI = 1.0, 1.6) were associated with higher likelihoods of offering PrEP. Conclusions. PrEP is highly effective and recommended for patients at risk for HIV from injection drug use. Nearly 95% of US outpatient substance use treatment facilities did not offer PrEP-a missed opportunity for harm reduction through primary HIV prevention. Public Health Implications. Diversification of the array of available HIV PrEP options and the ongoing HIV and opioid use epidemics require outpatient substance use treatment facilities to expand PrEP availability. (Am J Public Health. 2024;114(8):833-837. https://doi.org/10.2105/AJPH.2024.307699).