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Antithyroid Antibodies Test - Topic Overview

The immune system may produce antithyroid antibodies. These antibodies destroy thyroid tissue. This test can find out if you have these antibodies.

High levels of antithyroid antibodies may mean that you have autoimmune hypothyroidism (Hashimoto's thyroiditis). Or you may have autoimmune hyperthyroidism (Graves' disease). But some people who have hypothyroidism or hyperthyroidism never test positive for these antibodies. And some people who test positive may never get hypothyroidism or hyperthyroidism.

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If you have mild (subclinical) hypothyroidism, you may get this test. It can help predict how likely it is that you will get hypothyroidism that will later cause symptoms.

    This information is produced and provided by the National Cancer Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National Cancer Institute via the Internet web site at http:// cancer .gov or call 1-800-4-CANCER.

    WebMD Medical Reference from Healthwise

    Last Updated: November 14, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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