Dengue IgM test is a blood test used to detect the presence of IgM antibodies against the dengue virus. These antibodies are produced by the body in response to an active or recent infection with the dengue virus. The test is typically performed within 3-7 days of the onset of symptoms of dengue fever, such as fever, headache, joint and muscle pain, and rash. The test may also be used to confirm a suspected case of dengue or to assess a patient’s immunity to the virus. A positive IgM test result suggests that the person has an acute or recent dengue infection, while a negative result indicates that the person may not have a current or recent infection. It is important to note that the test results should be interpreted in conjunction with other clinical and laboratory findings.