The ENA Screening IgG – ELISA test qualitatively detects IgG autoantibodies to SSA, SSB, Sm, RNP68, Scl-70, and Jo-1 in human serum and plasma. These antibodies are linked to autoimmune diseases such as lupus, rheumatoid arthritis, and Sjögren’s syndrome. By distinguishing extractable nuclear antigens (ENA), this assay aids in diagnosing systemic autoimmune disorders. It offers high specificity, making it a reliable screening tool for rheumatological conditions.