Judged: two independent readers; copy check clear.
TSH
TSH TSH, or thyroid-stimulating hormone, is a key hormone in the hypothalamic-pituitary-thyroid axis and is highly sensitive to changes in thyroid balance.
TSH, or thyroid-stimulating hormone, is a key hormone in the hypothalamic-pituitary-thyroid axis and is highly sensitive to changes in thyroid balance. Because it often shifts before FT3 or FT4 do, it is commonly used as a primary screening marker of thyroid dysfunction in clinical and research settings.