Dengue NS1 Rapid antigen test is rapid and qualitative test for the detection of dengue virus NS1 antigen in human serum/plasma/whole blood. This test is for In vitro diagnostic use only and is intended as an aid in the earlier diagnosis of dengue infection. Dengue NS1 is a highly conserved glycoprotein that is present at high concentration in the sera of dengue-infected patients during the early clinical phase of the disease.