Antithyroglobulin antibody

Overview
Antithyroglobulin antibody (or Thyroid antithyroglobulin antibody or Thyroglobulin antibody) is a test to measure antibodies to a protein called thyroglobulin, which is found in thyroid cells.

Complete differential diagnosis
A negative test is normal. A negative tests means no antibodies to thyroglobulin are found in blood. A positive test means antithyroglobulin antibodies are found in blood. This may be due to:


 * Grave's disease
 * Hashimoto's thyroiditis
 * Hypothyroidism
 * Myxedema
 * Systemic lupus erythematosus (SLE)
 * Thyroid cancer
 * Thyrotoxicosis
 * Type 1 diabetes

Pregnant women and relatives of those with autoimmune thyroiditis may also test positive for these antibodies.