CVCT Scales was a couples based pilot study, funded by the National Institutes of Health (NIH), that emerged out of an HIV prevention intervention that has a long history in South Africa: couples voluntary HIV counseling and testing (CVCT). This South African-based program identified HIV discordant heterosexual couples (one partner HIV positive and the other HIV negative) for prevention, pathogenesis, and vaccine evaluation research. The Emory Couples Testing and Counseling study adapted and evaluated the existing program in order to develop CVCT protocols appropriate for the use of men who have sex with men (MSM) in the United States. A randomized and small feasibility trial among MSM couples in Atlanta was conducted, new scales to measure couple efficacy were created and tested, and the information collected was used to inform a new Emory University-led intervention called Testing Together.