Thyroid Peroxidase Antibodies - TPO Ab
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Thyroid Peroxidase Antibodies - TPO Ab


Disorders of the thyroid gland are frequently caused by autoimmune mechanisms with the production of autoantibodies. Anti-TPO antibodies are thought to be significantly involved in thyroid dysfunction and hypothyroidism. The determination of TPO antibody levels is the most sensitive test for detecting autoimmune thyroid disease (e.g., Hashimoto thyroiditis, idiopathic myxedema, and Graves disease) and detectable concentrations of anti-TPO antibodies are observed in most patients with these disorders. The highest TPO antibody levels are observed in patients suffering from Hashimoto thyroiditis. In this disease, the prevalence of TPO antibodies is about 90% of cases, confirming the autoimmune origin of the disease. These autoantibodies also frequently occur (60%–80%) in the course of Graves disease

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