Thyroglobulin antibodies (anti-Tg) are immune proteins that target thyroglobulin, a protein made by the thyroid gland. This test helps detect autoimmune thyroid disorders.
Category: Thyroid Panel
Also known as: thyroglobulin antibody, anti-thyroglobulin, tg antibody, anti-tg, thyroglobulin ab, anti tg, tgab, anti-thyroglobulin antibody
Reference range: 0–4 IU/mL (Source: ABIM)
Standard unit: IU/mL
High values may indicate
High thyroglobulin antibodies may indicate Hashimoto's thyroiditis, Graves' disease, or other autoimmune thyroid conditions. They can also interfere with thyroglobulin tumor marker tests.
Low values may indicate
Low or absent thyroglobulin antibodies are normal and suggest no autoimmune activity targeting thyroglobulin.