Diagnostic tests for dengue fever help determine the presence of the virus in the blood. The tests commonly used to diagnose dengue fever are NS1, IgM antibody, and IgG antibody.

Annually, hemorrhagic Dengue fever becomes more prevalent during rainy months and peaks during October - November. Early signs are not highly specific and can be misdiagnosed. For how many days should a fever last before testing for hemorrhagic Dengue fever should be carried out?