Used for the quantitative determination of thyroid-stimulating hormone (TSH) receptor antibodies or thyroglobulin (TG) activity in biological samples such as serum or plasma. Commonly applied in research and clinical diagnostics to assess autoimmune thyroid disorders like Graves' disease or Hashimoto's thyroiditis. Enables high-throughput screening in laboratories due to its enzyme-linked immunosorbent assay (ELISA) format. Provides sensitive and specific measurement, supporting studies on thyroid function, immune response, and therapeutic monitoring in rodent models.