The Typhidot IgM test is the essential, time-sensitive test for diagnosing an active, current Typhoid fever. If you have a persistent, high fever, this test is critical. It specifically detects the "first-responder" (IgM) antibodies, which your immune system only produces at the beginning of an active infection. A simple blood draw is all that is required. This test provides the clear, 'real-time' answer your doctor needs to get you on the right antibiotic immediately. For a complete picture of your immune status (both active and past infection), we recommend our comprehensive Typhidot (IgG/IgM) Panel.