Question: what is the difference between thyroglobulin antibodies and thyroid peroxidase antibodies?
Answer: Thyroid peroxidase antibody (TPO)—the most common test for autoimmune thyroid disease; it can be detected in Graves disease or Hashimoto thyroiditis. Thyroglobulin antibody (TGAb)— this antibody targets thyroglobulin, the storage form of thyroid hormones.