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2. Thyroid function tests - Wikipedia

   en.wikipedia.org/wiki/Thyroid_function_tests

   Thyroid hormone uptake (T uptake or T 3 uptake) is a measure of the unbound thyroxine binding globulins in the blood, that is, the TBG that is unsaturated with thyroid hormone. [2] Unsaturated TBG increases with decreased levels of thyroid hormones. It is not directly related to triiodothyronine, despite the name T 3 uptake. [2] Reference ranges:

3. TRH stimulation test - Wikipedia

   en.wikipedia.org/wiki/TRH_stimulation_test

   First, blood is drawn and a baseline TSH level is measured. Then, TRH is administered via a vein. After 30 minutes blood is drawn again and the levels of TSH are measured and compared to the baseline. Some authors recommend additional blood sampling at 15 minutes. In children, late blood sampling at 60 to 120 minutes is necessary.

4. Hypothalamic–pituitary–thyroid axis - Wikipedia

   en.wikipedia.org/wiki/Hypothalamic–pituitary...

   The TSH, in turn, stimulates the thyroid to produce thyroid hormone until levels in the blood return to normal. Thyroid hormone exerts negative feedback control over the hypothalamus as well as anterior pituitary, thus controlling the release of both TRH from hypothalamus and TSH from anterior pituitary gland.

5. Should You Get Your Thyroid Hormone Levels Checked? - AOL

   www.aol.com/lifestyle/thyroid-hormone-levels...

   Reader's DigestSilent Signs of a Thyroid ProblemKnow the symptoms of an overactive and underactive thyroid before it interferes with your life. Several mysterious symptoms—from weight changes to ...

6. Thyroglobulin - Wikipedia

   en.wikipedia.org/wiki/Thyroglobulin

   In other words, a rise in thyroglobulin levels in the blood may be a sign that thyroid cancer cells are growing and/or the cancer is spreading. [9] Hence, thyroglobulin levels in the blood are mainly used as a tumor marker [10] [9] for certain kinds of thyroid cancer (particularly papillary or follicular thyroid cancer). Thyroglobulin is not ...

7. Thyroxine-binding globulin - Wikipedia

   en.wikipedia.org/wiki/Thyroxine-binding_globulin

   Thyroxine-binding globulin (TBG) is a globulin protein encoded by the SERPINA7 gene in humans. TBG binds thyroid hormones in circulation.It is one of three transport proteins (along with transthyretin and serum albumin) responsible for carrying the thyroid hormones thyroxine (T 4) and triiodothyronine (T 3) in the bloodstream.