This is a feasibility study of the use of home-based HIV self-testing of partners and household members of individuals recruited from select Antenatal Care (ANC), Tuberculosis (TB) and antiretroviral therapy (ART) clinics in Lesotho. This study uses an observational design to evaluate the feasibility and acceptability of home-based self-testing for HIV testing of partners and the effectiveness of this intervention to identify HIV discordant couples. It is hypothesized that a home-based self-testing intervention will increase the number of partners testing for HIV and will result in increased identiﬁcation of newly diagnosed HIV-discordant couples, the target population of the planned Enhanced Prevention in Couples (EPIC) study.