Thyroglobulin (Tg) details
What Thyroglobulin (Tg) shows
Thyroglobulin (Tg) is a protein produced exclusively by thyroid tissue, and its main clinical use is as a tumor marker in people who've already been treated for thyroid cancer (typically with surgical removal of the thyroid, sometimes combined with radioactive iodine treatment). Since normal thyroid tissue is the only source of thyroglobulin, a detectable or rising level after treatment can signal that some thyroid tissue — potentially cancer recurrence — remains or has returned, making it a key tool for post-treatment monitoring. It isn't useful as a general thyroid cancer screening test, since benign thyroid conditions also raise thyroglobulin.
Normal ranges
Typical adult range
2.8–40.9 ng/mL
Most labs report a range close to this
Hormunity optimal range
5–14 ng/mL
A narrower functional target
Each lab sets its own reference range. Always compare your result with the range printed on your report, and review it with a healthcare provider.
Tests that include Thyroglobulin (Tg)
Thyroglobulin (TG) is a secretory product only of the thyroid gland. The major clinical use of serum TG measurement is to monitor, but not to diagnose, patients with well-differentiated thyroid cancers.
- Thyroglobulin (Tg) Thyroglobulin, a protein made by the thyroid gland. Used mainly to monitor for thyroid cancer recurrence after treatment.
This test measures thyroglobulin (Tg) and thyroglobulin antibodies (Anti-Tg). Thyroglobulin is a protein produced by the thyroid gland that is often used as a tumor marker in patients with thyroid cancer. It is primarily monitored after thyroidectomy or radioactive iodine treatment to detect recurrence or residual thyroid tissue. Thyroglobulin antibodies are autoantibodies directed against thyroglobulin. Elevated levels are commonly associated with autoimmune thyroid diseases such as Hashimoto’s thyroiditis and can interfere with thyroglobulin monitoring in thyroid cancer patients.
- Thyroglobulin Antibodies (Anti-Tg) An autoantibody against thyroglobulin. Elevated levels are associated with autoimmune thyroid conditions like Hashimoto's thyroiditis, and checked before using thyroglobulin to monitor thyroid cancer.
- Thyroglobulin (Tg) Thyroglobulin, a protein made by the thyroid gland. Used mainly to monitor for thyroid cancer recurrence after treatment.
This test measures thyroglobulin (Tg) and thyroglobulin antibodies (Anti-Tg). Thyroglobulin is a protein produced by the thyroid gland that is often used as a tumor marker in patients with thyroid cancer. It is primarily monitored after thyroidectomy or radioactive iodine treatment to detect recurrence or residual thyroid tissue. Thyroglobulin antibodies are autoantibodies directed against thyroglobulin. Elevated levels are commonly associated with autoimmune thyroid diseases such as Hashimoto’s thyroiditis and can interfere with thyroglobulin monitoring in thyroid cancer patients.
- Thyroglobulin Antibodies (Anti-Tg) An autoantibody against thyroglobulin. Elevated levels are associated with autoimmune thyroid conditions like Hashimoto's thyroiditis, and checked before using thyroglobulin to monitor thyroid cancer.
- Thyroglobulin (Tg) Thyroglobulin, a protein made by the thyroid gland. Used mainly to monitor for thyroid cancer recurrence after treatment.
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