Developing a Telehealth + mHealth Cannabis Use Intervention for Young Adults

For the oral fluid testing pilot Inclusion Criteria: * Primary care patient of the Boston Children's Hospital Adolescent/Young Adult Medicine Practice * Participation in MOMENT-V open pilot * Ownership of a smartphone * Availability for the 2-week study duration Exclusion Criteria: * Inability/Unwillingness to provide contact information * Current pregnancy or parenting For the pilot RCT Inclusion Criteria: * Primary care patient of the Boston Children's Hospital Adolescent/Young Adult Medicine Practice or Martha Eliot Health Center Adolescent Clinic * 18 to 26 years old * Cannabis Use Disorders Identification Test-Revised (CUDIT-R) score of ≥8 * Recreational cannabis use on \>3 days/week, on average, in the past 30 days * Ownership of a smartphone that is PIN- or password-protected * Ability to read and speak English * Availability for the 6-month study duration Exclusion Criteria: * Inability/Unwillingness to provide contact information * Written certification from a physician for marijuana for medical use * Current participation in a substance use treatment program or research study * Current pregnancy or parenting * Participation in prior MOMENT or MOMENT-V research