CHAPTER 5

Secondary (pituitary disease - low TSH) and Tertiary (hypothalamic disease – low TRH) - - both associated with low free T4 and low TSH. Subclinical Hypothyroidism: increased TSH. maintains . T4 level at normal range. Treated only when pt develops goiter, hypercholesterolemia, sx of disease, or significantly elevated TSH (>20 uU/mL) ................
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