Aug 15, 2024 · The typical range for thyroid peroxidase antibodies (TPOAb) is less than 34 international units per milliliter (IU/mL). A TPOAb level below this threshold is considered normal, indicating no significant autoimmune activity against your thyroid.

Feb 12, 2025 · Having high levels of thyroid antibodies in your blood often means you have an autoimmune thyroid condition — either Hashimoto’s disease or Graves’ disease.

May 13, 2025 · What is the thyroid peroxidase antibody normal range? Normal TPO antibodies range is less than 30 international units per millimeter (IU/ml). 4 Thyroid peroxidase antibodies are considered high if above this. Note that the normal range used can differ in different laboratories.

Jul 15, 2025 · The real question to answer here is whether or not the absolute level of thyroid peroxidase antibodies tracks with disease severity. In other words, does having a higher level of antibodies (say, > 2,000) mean that your disease is more severe and more dangerous than someone with fewer antibodies?

TPO antibodies may be checked in patients with a high TSH, to help establish the underlying cause. If the TPO antibodies are positive, it means the cause of hypothyroidism is an autoimmune disease (e.g. Hashimoto’s thyroiditis).

Jun 14, 2022 · Heard of thyroid peroxidase antibodies and want to learn what it means if you have elevated levels? Find out the answer here, plus an easy way to check your levels.

Jul 9, 2024 · TPO antibodies in the blood may mean you have thyroid disease due to an immune system condition called Hashimoto's disease. With Hashimoto's disease, the immune system makes antibodies that attack healthy tissue by accident.

The determination of TPO antibody levels is the most sensitive test for detecting autoimmune thyroid disease (eg, Hashimoto thyroiditis, idiopathic myxedema, and Graves disease), and detectable concentrations of anti-TPO antibodies are observed in …

Normal thyroid peroxidase antibody levels are typically below 35 IU/mL, indicating a healthy thyroid function. Thyroid peroxidase antibodies (TPO antibodies) play a pivotal role in understanding thyroid health.

Apr 4, 2025 · Thyroid peroxidase (TPO) antibodies are one marker of thyroid autoimmunity and a predictor of clinical thyroid dysfunction. According to the National Health and Nutrition Examination Survey (NHANES III), 11.3% of the U.S. population has positive TPO antibodies.