This article examines the home rapid HIV test as a new practice of US biocitizenship. Via an analysis of discourse surrounding self-diagnostics, I conclude that while home HIV tests appear to expand consumer rights, they are in fact the vanguard of a new form of self-testing that carries a moral urgency to protect one’s own body and to manage societal risk. In addition, these tests extend biomedical authority into the private domain, while appearing to do the exact opposite. Furthermore, access to these tests may be stratified, contradicting the intent expressed by the manufacturer to reach populations in need of it most and reinforcing stigma against them. Lastly, diagnostics such as the rapid home HIV test represent new obligations for surveillance of one’s own health and that of others. The new public health effort to test the population at large has given rise to a new ‘risky’ population: the untested bodies.