The IgG IgA test is a blood test used to measure the levels of Immunoglobulin G (IgG) and Immunoglobulin A (IgA) antibodies in the body. IgG and IgA are two of the five major classes of immunoglobulins (antibodies) found in the body. Immunoglobulins are proteins produced by the immune system to recognize and attack foreign substances such as bacteria or viruses. The IgG IgA test is used to help diagnose a variety of conditions, including allergies, autoimmune diseases, and infections.
IgG antibodies are the most common immunoglobulin in the body. They are responsible for fighting off infections and helping the body maintain immunity. IgA antibodies are less common and are found in mucosal surfaces such as the eyes, nose, and throat. They help the body fight off infections in these areas.
The IgG IgA test measures the levels of IgG and IgA antibodies in the blood. Higher levels of IgG antibodies can indicate an infection or allergy, while higher levels of IgA antibodies can indicate an autoimmune disorder or a chronic infection. Lower levels of either antibody can indicate a weakened immune system.
The IgG IgA test is typically ordered when a person has symptoms of an infection or autoimmune disorder. It is also ordered for people who are at risk of developing an infection or autoimmune disorder, such as those with weakened immune systems due to illness or medications. The test is usually done in conjunction with other tests to help diagnose the condition.