At Study Visit 2A, participants in the SOC arm will undergo blood collection for viral load testing in keeping with WHO guidelines. An additional tube 10cc tube will be drawn for storage for future analyses. A study questionnaire will be administered to assess self-reported ART medication adherence. No other procedures are scheduled at this visit. Participants will be notified that study staff will contact them as soon as their results are available, to request return to clinic for further management. The participant will be instructed to continue their current ART regimen until at least the next clinical visit. As soon as the viral load result is available, study participants will be contacted and requested to return to clinic for review. If the viral load is indeterminate or not completed for any reason, study staff will request that the participant return for a repeat viral load test.