This test is done to assess the quantitative detection of antibody titer of Dengue Virus as an aid to the diagnosis of Acute Dengue infection. significant change in titer are useful to confirm clinical diagnosis of infection.Dengue fever testing is used to determine whether a person with symptoms and recent potential exposure to dengue has been infected. IgG and IgM antibodies detection are primarily used to help diagnose a current or recent infection. Diagnosis may require a combination of these tests because the body's immune system produces varying levels of antibodies over the course of the illness. IgM antibodies are produced first and tests for these are most effective when performed at least 7-10 days after exposure. Levels in the blood rise for a few weeks, then gradually decrease. After a few months, IgM antibodies fall below detectable levels. IgG antibodies are produced more slowly in response to an infection. Typically, the level rises with an acute infection, stabilizes, and then persists long-term. Individuals who have been exposed to the virus prior to the current infection maintain a level of IgG antibodies in the blood that can affect the interpretation of diagnostic results.