Inverness Medical announced the launch of its new 4th generation rapid HIV diagnostic test – Determine HIV-1/2 Ag/Ab Combo – at the International AIDS Conference (AIDS 2008) in Mexico City. Capable of detecting HIV infection several days earlier than HIV antibody only tests, Determine HIV-1/2 Ag/Ab Combo can, simultaneously and separately, detect HIV p24 antigen (Ag) and antibodies (Ab) for HIV-1 and HIV-2 in human serum, plasma, or whole blood. The lateral flow test will increase the ability to detect and diagnose primary HIV infection, providing clear visual results. Determine can be performed in remote locations where equipments and laboratory facilities are limited. This gives it an edge over lab-based EIA and ELISA 4th generation HIV testing.