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Thyroid Peroxidase (TPO) Antibody Test

Measure TPO antibodies for insights into your thyroid health.

The thyroid peroxidase (TPO) antibody test measures the level of thyroid peroxidase antibodies in your blood. The immune system produces these antibodies if it mistake... Read More
$ 69.0
$69

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Thyroid Peroxidase (TPO) Antibody Test
$ 69.0
$69

Test Details

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Sample Type: Blood
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Collection Method: In person at a Labcorp location
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Age: 18+
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Results: Within 1-2 days from when your sample arrives at our lab
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HSA/FSA: Accepted
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Test must be taken by purchaser

Preparation: If you’re taking a supplement containing biotin (also called vitamin B7 or B8, vitamin H, or coenzyme R), commonly found in products promoting nail, skin and hair health, it is recommended that you wait at least 72 hours from your last dose before sample collection.

What's Tested
  • Thyroid peroxidase (TPO) antibody

    Thyroid peroxidase (TPO) antibody is a protein produced by the immune system that targets thyroid peroxidase, an enzyme needed for thyroid hormone production. This test measures the level of TPO antibodies in the blood. Elevated TPO antibody levels are often associated with autoimmune disorders such as Hashimoto’s thyroiditis and Graves’ disease but can be related to other conditions. These antibodies can indicate an ongoing immune response against the thyroid, potentially leading to inflammation and impaired thyroid function. Elevated TPO antibody levels may contribute to symptoms such as fatigue, weight gain, mood changes and irregular menstrual periods if thyroid function is abnormal. Some individuals will have elevated TPO antibodies without any evidence of a thyroid disorder.

FAQ

  • A TPO test is used to detect presence of thyroid peroxidase antibodies in the blood, which can suggest an autoimmune thyroid disorder. Understanding TPO levels can help identify autoimmune conditions like Hashimoto’s thyroiditis or Graves’ disease, where the immune system mistakenly attacks the thyroid gland, potentially leading to thyroid dysfunction. This TPO antibody test is often ordered alongside TSH, free T4 and free T3 when individuals experience symptoms of hypothyroidism or hyperthyroidism.

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