Immunoglobulin A blood test
The Immunoglobulin A (IgA) blood test measures the levels of IgA antibodies in the bloodstream. IgA is a type of antibody that plays a crucial role in the immune system's defense against infections, particularly those affecting the mucous membranes, such as the respiratory and digestive tracts. The test is used to evaluate the immune system's function and to diagnose certain immune disorders.
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