low total T3, T4
low free T3, T4
HIGH RAUI (bc thyroid hunry for I) opp KI
VERY postiive scan
eu or hypothyroid
congential hypothy: under dev thyroid to to genetic AR, "cretinism" (MR, dec growth, puffy face, deaf/mute, neuro-may appear normal in early months)
IODINE DEFICIENCY, not enough to make TH, tryin to stimulate to TSH high (leading to goiter)
tx: I supplement, newborn screening!