The state laboratory calls your office telling you that a newborn infant, now 8 days old, has an elevated TSH and low T4 on his newborn screen. If this condition is left untreated, the infant is likely to demonstrate which of the following in the first few months of life?

a. Hyperreflexia

b. Hyperirritability

c. Diarrhea

d. Prolonged jaundice

e. Hyperphagia

the answer is below…
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