Thyroid Peroxidase Antibodies (TPOAb) / Anti-TPO Test

The Thyroid Peroxidase Antibodies (TPOAb) test commonly called the Anti-TPO blood test measures the level of antibodies directed against thyroid peroxidase, an enzyme essential for the production of thyroid hormones. When the immune system mistakenly targets this enzyme, it can lead to inflammation and impaired thyroid function.