Overview OMAR Opioid Use Disorder Status: Recruiting Trial end date: 2025-12-15 Target enrollment: Participant gender: Summary The goal of this research study is to examine the endocannabinoid (eCB) function in vivo in individuals with opioid use disorder (OUD) by measuring cannabinoid receptor 1 (CB1R) availability. Phase: Phase 1 Details Lead Sponsor: Yale UniversityCollaborator: National Institute on Drug Abuse (NIDA)