How do you measure for IGA in blood?

To measure Immunoglobulin A (IgA) levels in blood, a healthcare professional typically performs a blood draw to collect a sample. This sample is then analyzed using techniques such as enzyme-linked immunosorbent assay (ELISA) or nephelometry to quantify the amount of IgA present. The results can help assess immune function or diagnose conditions related to abnormal IgA levels, such as immunodeficiencies or certain autoimmune disorders.