Motivational Interviewing to Increase Uptake of Drug Checking and Safe Drug Use Behaviors to Reduce Overdose

Inclusion Criteria

• •A total of 588 PWUD participants will be recruited for the proposed study (MI-CHANCE). To be eligible to participate in this study, an individual must meet all of the following criteria:
• •1. Provision of signed and dated informed consent form
• •2. Stated willingness to comply with all study procedures and availability for the duration of the study
• •3. Be aged ≥18 years at time of recruitment
• •4. Must have used illicit opiates (e.g., heroin, fentanyl) and/or methamphetamine ≤1 week prior to recruitment date
• •5. Live in San Diego County with no plans to permanently move over the next 30 months
• •6. Have not previously used the FTIR drug checking service
• •7. Enrolled into ongoing prospective cohort study La Frontera (the border) (existing or new participants)
• •Enrollment will be capped so that \<50% of the sample reports only using methamphetamine to ensure that the sample is comprised primarily of people who use opiates who are at greatest risk of OD. Recruitment will be done through targeted sampling at hotspots as well as homeless encampments, shelters and outreach through social media.