July 2018 This fourth edition of the Unitaid/WHO market and technology landscape: HIV rapid diagnostic tests for self-testing report summarizes the current HIV testing gap; the challenges facing efforts to scale up; and the potential role HIV self-testing (HIVST) could play to achieve the United Nation’s 90-90-90 targets. In particular, the report synthesises the existing and emerging market demand and supply of kits. The information in this report is intended for manufacturers, donors, national programmes, researchers and other global health stakeholders who are exploring the potential role of HIVST.