There are several types of tests used for dengue diagnosis. The commonly employed tests include the NS1 antigen test, IgM antibody test, IgG antibody test, and PCR (Polymerase Chain Reaction) test. The NS1 antigen test detects the NS1 protein secreted by the dengue virus in the early stages of infection. IgM antibodies indicate recent infection, while IgG antibodies indicate past infection or previous exposure. PCR is a molecular technique that detects the genetic material of the virus. These tests are conducted using blood samples and are performed in medical laboratories or healthcare facilities. The choice of the test depends on factors such as the stage of infection, availability of resources, and the healthcare provider's recommendation. Each test plays a specific role in dengue diagnosis and provides valuable information for effective management of the disease.