What is the normal range for antithyroid antibodies?

Thyroid Antibody Test Results Normal values are: TPO antibody: Less than 9 IU/mL. Thyroid-stimulating immunoglobulin antibody (TSI): Less than 1.75 IU/L. Anti-Tg antibody: Less than 4 IU/mL.

What is a high antithyroid antibodies level?

Anti-Thyroperoxidase Antibody Levels >500 IU/ml Indicate a Moderately Increased Risk for Developing Hypothyroidism in Autoimmune Thyroiditis.

What is a normal thyroid peroxidase antibody level?

It is usually ordered with thyroglobulin antibody testing. Normal range for Thyroid Peroxidase Antibodies: Quest Diagnostics: <9 IU/mL. LabCorp: adults: <34 IU/mL.

What is a high thyroid peroxidase antibody level?

Increased levels of thyroid peroxidase antibody (TPOAb) in the blood is a marker for autoimmune thyroid disease. Positive thyroid peroxidase antibody (TPOAb) levels in the blood have also been associated with difficulty getting pregnant (infertility) and pregnancy loss in some studies but not in others.

How do you read thyroid antibodies results?

What do the results mean?

  1. Negative: no thyroid antibodies were found. This means your thyroid symptoms are probably not caused by an autoimmune disease.
  2. Positive: antibodies to TPO and/or Tg were found. This may mean you have Hashimoto disease.
  3. Positive: antibodies to TPO and/or TSH receptor were found.

What is a positive TPO test?

The presence of TPO antibodies in your blood suggests that the cause of thyroid disease is an autoimmune disorder, such as Hashimoto’s disease or Graves’ disease. In autoimmune disorders, your immune system makes antibodies that mistakenly attack normal tissue.

How do you read antibody test results?

COVID-19 antibody test results could be:

  1. Positive. A positive test means you have COVID-19 antibodies in your blood, which indicates past infection with the virus.
  2. Negative. A negative test means that you have no COVID-19 antibodies, so you probably were not infected with the COVID-19 virus in the past.

What labs are abnormal with Hashimoto’s?

Typically, in Hashimoto’s thyroiditis, the pituitary gland in the brain will make more TSH (your blood test for TSH comes back high) because it thinks the thyroid is not making enough thyroid hormone. (Your T4 blood test may be below normal or on the low end of normal).