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thyroxine
(redirected from free thyroxine)

   Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.06 sec.
thy·rox·ine  (th-rksn, -sn) also thy·rox·in (-rksn)
n.
An iodine-containing hormone, C15H11I4NO4, produced by the thyroid gland, that increases the rate of cell metabolism and regulates growth and that is made synthetically for treatment of thyroid disorders.

[thyr(o)- + ox(y)- + in(dole).]

thyroxine  (th-rksn, -sn)
An iodine-containing hormone secreted by the thyroid gland that increases the rate of cell metabolism and regulates growth. Thyroxine can also be made synthetically for treatment of hypothyroidism.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.thyroxine - hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells; "thyroxine is 65% iodine"
thyroid hormone - any of several closely related compounds that are produced by the thyroid gland and are active metabolically

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One result of thyroid suppression therapy with levothyroxine is subclinical thyrotoxicosis (subclinical hyperthyroidism), defined as the presence of a low TSH level with a normal free thyroxine (F[T.
Propylthiouracil-induced hypothyroidism in coho salmon, Oncorhynchus kisutch: effects on plasma total thyroxine, total triiodothyronine, free thyroxine and growth hormone.
The serum free thyroxine index increased significantly, but there was no change in serum
 
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