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Free T3 (Triiodothyronine) is an active thyroid hormone. Free T3 is usually measured in addition to TSH and Free T4 to diagnose any potential thyroid disorder.
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Free T3 (Triiodothyronine) is an active thyroid hormone. Free T3 is usually measured in addition to TSH and Free T4 to diagnose any potential thyroid disorder.
T4, or thyroxine, is a thyroid hormone and its level indicates the activity of the thyroid gland.
TSH or thyroid-stimulating hormone is secreted by the pituitary gland. TSH is tested when examining thyroid function.