high thyroid peroxidase antibodies mean
The presence of TPO antibodies in your blood suggests that the cause of thyroid disease is an autoimmune disorder, such as Hashimoto's disease or Graves' disease.In autoimmune disorders, your immune system makes antibodies that mistakenly attack normal tissue.ntibodies that attack the thyroid gland cause inflammation and impaired function of the thyroid. Your doctor may also order a TPO antibody test if you are pregnant and have an autoimmune disease, especially one that involves the thyroid, such as Hashimoto's disease or Graves' disease.