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Thyroid peroxidase antibodies (TPO Ab) - description and reference ranges

What is it?

Thyroid peroxidase is a protein produced by your thyroid gland. Thyroid peroxidase is essential in the healthy operation of your thyroid, so this biomarker checks the presense of Thyroid peroxidase antibodies.

If these are present, it may mean, similar to Thyroglobulin antibodies (TGA) that there is an issue with your thyroid, such as an autoimmune disorder.

In autoimmune disorders (Graves′ or Hashimoto′s conditions), the immune system makes antibodies that attack your own, normal tissue by mistake. This can cause swelling in the thyroid gland and reduced function of the thyroid.

Reference ranges

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