Bburgdoriggigmserrto

What is this test?

The Borrelia burgdorferi IgG/IgM Antibody test is a blood test that looks for antibodies your body produces in response to infection with the bacterium Borrelia burgdorferi, which causes Lyme disease. This bacterium is transmitted through the bite of infected blacklegged ticks (deer ticks). The test measures two types of antibodies: IgM (immunoglobulin M), which appear early in infection, and IgG (immunoglobulin G), which develop later.

Why is this test performed?

This test is performed when you have symptoms suggestive of Lyme disease, especially if you have been bitten by a tick or have spent time in areas where Lyme disease is common. Early symptoms may include a characteristic "bull's-eye" rash (erythema migrans), fever, headache, fatigue, and muscle aches. Later symptoms can include joint pain, neurological problems, and heart involvement. The test helps confirm whether your symptoms are due to Lyme disease.

What do the results mean?

Results are typically reported as a ratio or as positive/negative for IgM and IgG antibodies. A positive IgM result suggests early infection, as IgM antibodies usually appear within 1-2 weeks after a tick bite. A positive IgG result indicates a later stage of infection, as IgG antibodies typically develop 4-6 weeks after infection. In some cases, both IgM and IgG may be positive. Your healthcare provider will interpret these results along with your symptoms and exposure history. Sometimes additional confirmatory testing (like Western blot) may be recommended.

How is the test done?

A blood sample is drawn from a vein in your arm. The sample is then sent to a laboratory for analysis. The test uses laboratory techniques to detect the presence of IgM and IgG antibodies against Borrelia burgdorferi. You do not need to fast or make any special preparations before this test.