IMMUNOGLOBULIN A (IGA)

The immunoglobulin A (IgA) test measures the level of IgA antibodies in the blood. IgA antibodies play a crucial role in mucosal immunity, protecting against infections in the respiratory and gastrointestinal tracts. This test is used to diagnose and monitor immunodeficiency disorders, such as selective IgA deficiency, and autoimmune diseases, such as celiac disease. Elevated IgA levels can indicate chronic infections or autoimmune disorders, while low levels suggest immunodeficiency. The IgA test provides valuable information for assessing immune function, diagnosing underlying conditions, and guiding treatment decisions.