What is the source of thyroid hormones?
The main hormones produced by the thyroid gland are thyroxine or tetraiodothyronine (T4) and triiodothyronine (T3).
Last updated on 12 Dec 2024
TSH (Thyroid stimulating hormone) tells your thyroid how much thyroid hormone it needs to make. If the thyroid hormone levels in your blood are too low, your pituitary gland makes larger amounts of TSH to tell your thyroid to work harder.
A normal range for TSH in most laboratories is 0.4 milliunits per liter (mU/L) to 4.0 mU/L. If your TSH is higher than 4.0 mU/L on repeat tests, you probably have hypothyroidism. Your doctor may also order a T4 test
Get yourself tested and you will know the exact thyroid functioning.
A TSH over 10 mIU/L has been linked to an increased risk of coronary heart disease and heart failure, which is why you' will probably want to seek treatment if your TSH is close to (but still under) that upper limit
TFT, Thyroid Profile Total, Thyroid Stimulating Hormone Total T3 Total T4
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