Audio Qbank – Q267 – Neonatal thyroid function

 

A neonate has a heel prick test performed showing normal serum TSH, normal serum free T4, and decreased serum total T4. What’s the most likely diagnosis?

Anti-thyroid antibodies (fetal-derived)
Anti-thyroid antibodies (maternally derived)
Dysgenesis of thyroid follicles
Globulin deficiency
Sick euthyroid syndrome
Thyrotropin deficiency