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Thyroid

Thyroglobulin Antibody (TgAb)

Also known as: TgAb, Thyroglobulin Autoantibodies

CPT 83735Quest 622LabCorp 004580
When to Seek Prompt Care

No common urgent flag from this test alone

What It Measures

This test checks how much thyroglobulin antibodies (TgAb) are in your blood. These antibodies are proteins made by your body's defense system. They can sometimes wrongly attack your thyroid gland.

Why It's Ordered

Your doctor orders this test to help find out if you have certain immune system problems that affect your thyroid gland. One example is Hashimoto's disease. The test also helps your doctor check on you after you've been treated for thyroid cancer.

Reference Range

Reference ranges for Thyroglobulin Antibody (TgAb) can vary by laboratory. It is important to discuss your specific results with your doctor for proper interpretation.

Clinical Reference

Quest: 622
LabCorp: 004580
CPT: 83735
ICD-10: E83.42, E83.40, N18.9, R25.2

Medicare covers for magnesium deficiency evaluation

Educational purposes only — This information is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your lab results with your healthcare provider.