The AQUA-TEST Study is a self-collection blood validation study designed to find suitable samples for HIV, syphilis, and other biomarker testing. If eligible, participants will be asked to attend a one-time study visit at our clinic located in downtown Decatur. Participants that complete all study parts will receive up to $205 for their sample collections, including one self-collection sample mailed back to the lab by the participant. The AQUA-TEST Study is open to all genders and ages 18+. Please contact us at 470-870-6809 or aquastudy@emory.edu if interested in enrolling or if you have any further questions.