Malaria P.f/P.v Antigen Combo(Malaria P.f/P.v Ag) Rapid Test is an in vitro diagnostic test kit for the simultaneous detection and differentiation of Plasmodium falciparum (Pf) antigen and P. vivax (Pv) antigen. Malaria is a life-threatening disease spread to humans by some types of mosquitoes. It is mostly found in tropical countries. It is preventable and curable. There are 5 Plasmodium parasite species that cause malaria in humans and 2 of these species – P. falciparum and P. vivax – pose the greatest threat.