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Thyroglobulin (Tg)

Item# LC042100

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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. Take all medications as prescribed.

 

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