A negative test is normal. A negative test means no antibodies to thyroglobulin are found in your blood.
Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
A positive test means antithyroglobulin antibodies are found in your blood. This may be due to:
Pregnant women and relatives of those with autoimmune thyroiditis may also test positive for these antibodies.
Ladenson P, Kim M. Thyroid. In: Goldman L and Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders; 2007:chap 244.
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