Lab-on-a-chip (LOC) devices have a tremendous potential for improving the health of people in developing countries by providing immediate diagnosis in the field. The development of diagnostics for global health, however, presents unique and challenging design criteria. In this talk the speaker will discuss the current efforts, in conjunction with partners in industry, public health, and local governments, to develop new rapid diagnostic tests. Such tests span a variety of technologies, and target HIV, sexually transmitted diseases, and other infectious diseases.