high trh and tsh but klow t3 and t4 Thyroid Hormones, T3 and T4,
Thyroid Hormones, T3 and T4, in the Brain PMC TSH vs T3 vs T4 High Yield Exam Points, TSH = Most sensitive screening test (FIRST test in thyroid disorders), TSH is the BOSS (negative feedback control), T3 = Most active hormone The hypothalamic pituitary thyroid axis regulates thyroid hormone Download Scientific Diagram The thyroid gland Basicmedical Key
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