Thyroid Autoantibody Test
Health Checkups
≈ ¥20-50
(≈ $3-7)
2 hr
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Description
Estimated cost for Thyroid Autoantibody Test at general public hospitals in China is about ¥15-40, and at Grade 3A hospitals about ¥20-50, varying by hospital tier and region.
Main Uses
The primary purposes of thyroid autoantibody testing include diagnosing autoimmune thyroid diseases such as Hashimoto's thyroiditis and Graves' disease, monitoring the progression of these conditions, and assessing the risk of developing thyroid dysfunction in individuals with a family history of autoimmune thyroid disorders. It is also used to evaluate unexplained hypothyroidism or hyperthyroidism and to monitor the effectiveness of treatments.
Normal Range
Thyroid autoantibody tests typically include Thyroid Peroxidase Antibodies (TPOAb) and Thyroglobulin Antibodies (TgAb). The normal range for TPOAb is generally <35 IU/mL, and for TgAb, it is <4.1 IU/mL. These values can vary slightly depending on the laboratory and the specific method used.
Low Values - Possible Causes
Low levels of thyroid autoantibodies are usually not a concern and do not indicate any specific condition. However, if previously high levels decrease, it might suggest an improvement in autoimmune thyroid disease or response to treatment.
High Values - Possible Causes
High levels of thyroid autoantibodies can be caused by: 1. Hashimoto's thyroiditis, 2. Graves' disease, 3. Postpartum thyroiditis, 4. Silent thyroiditis, 5. Other autoimmune conditions affecting the thyroid gland.