Willingness to use fentanyl test strips among street drug users in Puerto Rico: a cross-sectional study

Willingness to use FTS is high among Puerto Rican street drug users, especially among those engaged in substance abuse treatment. Lower willingness among individuals with severe SUD aligns with patterns reported in prior research, suggesting that higher levels of dependence may limit the perceived feasibility or utility of FTS. This underscores the need for low-threshold, tailored harm reduction strategies. These findings highlight both the promise and challenges of implementing drug-checking interventions in underserved, high-risk populations. As FTS are not currently available in Puerto Rico, expanding access through harm reduction and treatment programs should be a public health priority.