Synonyms: Antimicrosomal Antibody; Antithyroid Microsomal Antibody; Thyroid Peroxidase Autoantibodies; TPO Antibodies

Why It Is Done

*Used in differential diagnosis of hypothyroidism and thyroiditis

Test Overview

A blood test done to detect autoantibodies directed against thyroid peroxidase (TPO), an enzyme in the thyroid gland that is very important to the production of thyroid hormones.

Thyroid antibodies are present if hypothyroid is related to thyroiditis.

How To Prepare

No special preparation is necessary.