Doctor insights on:
Synthesis And Storage Of Thyroxine And Triiodothyronine
Can any doc tell me what's the difference between thyroxine, thyrocalcitonin and triiodothyronine?
Yes: Thyroxine also known as T4 is the main product of the thyroid gland. Triiodothyronine or t3 is also a product of the thyroid but most of it comes from the conversion of T4 in the human tissues by the enzyme deiodinase. T3 is the active and most potent form of thyroid hormone. Thyrocalcitonin or just calcitonin is unrelated to the above two, comes from the c-cells, and affects the calcium level. ...Read more
Triiodothyronine : 0.76 ng/ml; thyroxine : 5.27 ; thyroid stimulating hormone : 1.15. Is this normal?
Probably: In interpreting thyroid hormone levels, you have to consider several things: What is the clinical situation at the time of the lab draw- as stress, medications, even pregnancy can all effect the levels and what they should be. Every lab also has a slightly different 'normal' range depending on how they measure the hormone. Seeing the trend also helps - Are they stable, going up or down? ...Read moreSee 1 more doctor answer
Does normal (1.01) "thyroxine (t4) free, direct, s, " normal (0.931) "tsh, " and low (67) "triiodothyronine (t3)" = Synthroid dose good? Or go up/down?
Tsh=2.11/t3 uptake=30.3/free t3=3.3/thyroxine=9.2/triiodothyronine=102.4/ everything is normal. Why do I still feel extremely tired and irritable?
On syn. 50 mcg labs are: TSH 4.45; rt3 23.3; T4 10.4; t3uptake 30; free T3 3.1; triiodothyronine T3 121. Increase synthroid? Don't sleep, fast heart.
Thyroxine is a type: The thyroid gland secretes two types of hormones: thyroxine (t4) and triiodothyronine (t3), but it produces T4 at much higher levels than t3. When treating thyroid hormone deficiency, your physician may prescribe levothyroxine (which is oral tablet of t4), liothyronine (oral formulation of t3), or combinations of such, or even dessicated (dried) pig thyroid as replacement therapy. ...Read moreSee 2 more doctor answers
Yes: Just as you would think.Get a more detailed answer ›
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