A number of infectious diseases prevalent in areas with hot, humid climates cause similar symptoms including fever, aches and chills, making them hard for doctors to accurately diagnose at an early stage. Serologic assays for the detection of antigens and antibodies are common methods for the diagnosis of infections with specific infectious agents. CTK specializes in tropical and parasitic diseases and offers a broad range of tests that can be used in combination to guide the management of severe, treatable infections requiring specific therapy.