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Thyroglobulin (Tg)

Item# LC042100

Retail Price: $100.00

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  • Thyroglobulin (Tg)
  • Item Catalog Number: LC042100

Thyroglobulin (Tg) is a protein produced by the thyroid gland. Thyroglobulin combines with iodine to produce the hormones thyroxine (T4) and triiodothyronine (T3). Tg also serves as a protein storehouse for iodine and inactive thyroid hormones until these substances are needed.

Thyroglobulin is elevated in these types of thyroid disorders:

  • Hyperthyroidism
  • Goiter (iodine deficiency)
  • Inflammation or physical injury to the thyroid
  • Thyroid tumors

Although the thyroglobulin test is primarily used as a tumor marker it is not intended as a screening test for thyroid cancer.

Fasting is not required for this test. Take all medications as prescribed.



The laboratory services are for informational purposes only. It is not the intention of National Diagnostics, Inc and Life Extension to provide specific medical advice but rather to provide users with information to better understand their health. Specific medical advice including diagnosis and treatment will not be provided. Always seek the advice of a trained health professional for medical advice, diagnosis or treatment.

Both the physician and the testing laboratory are independent contractors with whom National Diagnostics, Inc makes arrangements for your blood tests. Neither National Diagnostics, Inc or Life Extension will be liable for any acts or omissions of the physician, the testing laboratory, or their agents or employees.