Immunoglobulin: IgA, IgG, and IgM

What is Immunoglobulin IgA, IgG, and IgM?

Immunoglobulins, also known as antibodies, are proteins produced by the immune system in response to infections. IgA, IgG, and IgM are the three main types that help in identifying different phases and types of infections. IgM is created first during a new infection, followed by IgG for long-term immunity and memory, and IgA is mainly found in mucous membranes, such as in the intestines and lungs, to protect against infections on these surfaces.

Why should you have Immunoglobulin IgA, IgG, and IgM tested?

This test is useful for diagnosing current or recent infections, monitoring immune status, and determining the necessity for vaccinations or additional tests. It is also valuable for people with symptoms of autoimmune diseases or allergies, to measure their specific immunoglobulin levels and understand how their immune system is responding.

What does it indicate?

The levels of IgA, IgG, and IgM can indicate the presence and stage of an infection. High levels of IgM may suggest a recent infection, while high levels of IgG can indicate a previous infection or long-term immunity. IgA levels help in assessing immune function in mucous membranes and may point to chronic infections or autoimmune diseases.

What does a high level of Immunoglobulin mean?

High levels of IgA, IgG, or IgM may indicate active or recent infections, vaccination response, or, in some cases, autoimmune diseases. High IgA values can also suggest chronic inflammation in mucous membranes.

What does a low level of Immunoglobulin mean?

Low levels of IgA, IgG, or IgM may indicate a reduced immune response, a potential risk for frequent or severe infections, and in some cases immunodeficiency diseases.