Immunoglobulins Panel, Serum IgG IgA IgM IgE
This test measures the levels of 4 classes of immunoglobulins in the blood. Results will include numerical values form Immunoglobulin A (IgA), Immunoglobulin E (IgE), Immunoglobulin G (IgG), and Immunoglobulin M (IgM). Immunoglobulins, or antibodies, are an important part of the immune system which fight off bacteria, viruses, and other foreign organisms. Measuring Immunoglobulin levels can help evaluate a person’s immune system.
- Immunoglobulin M (IgM): The first antibodies produced to combat a new infection. The levels typically increase over several weeks and then begin to lower as IgG antibodies are produced.
- Immunoglobulin G (IgG): IgG antibodies begin to develop shortly after infection and may persist for a long period of time. In some cases, IgG antibodies provide long-term or lifelong protection from future infections.
- Immunoglobulin A (IgA): IgA antibodies are typically found in the mucous membranes of the body and protect from infection in areas such as the sinuses, lungs, intestines, and stomach.
- Immunoglobulin E (IgE): IgE antibodies are typically produced as part of the body’s response to various allergens.