Evaluating the SUBLOCADE Treatment Exit Strategy

Inclusion Criteria Participants must meet all of the following criteria: * The participant, together with their healthcare provider (the investigator), have previously determined that it is appropriate to stop MOUD treatment, and the participant meets the following criteria: * Has been treated with at least 12 injections of SUBLOCADE. * In the opinion of the investigator, has had their OUD symptoms (ie, overdose, illicit/nonmedical use, withdrawal) controlled for at least 9 months. * In the opinion of the investigator, has had any other substance use disorder (excluding alcohol, nicotine, or cannabis) symptoms controlled for at least 9 months. * Is willing to complete the Baseline Visit 4 to 8 weeks after the last dose of SUBLOCADE. * Has signed the ICF and is 18 years of age or older. * Is not currently using opioids to treat a diagnosis other than OUD.