Thyroid Peroxidase Antibody

This add-on measures the level of thyroid peroxidase (TPO) antibodies in your blood—immune proteins that target an enzyme essential for thyroid hormone production. Elevated Anti-TPO levels can signal autoimmune thyroid disorders such as Hashimoto’s thyroiditis or Graves’ disease—even if symptoms are mild or not yet apparent. It’s a valuable marker for assessing immune activity and early thyroid dysfunction.Read our complete guide to Thyroid Peroxidase Antibody →