HY USMLE Q #768 – Pregnancy

A 23-year-old woman at 16 weeks’ gestation comes to the obstetrician for a follow-up appointment. Which of the following sets of findings is most likely to be seen in this patient?

  ↔ TSH; ↔ Free T4; ↑ Total T4; estrogen effect
  ↔ TSH; ↑ Free T4; ↔ Total T4; estrogen effect
↓ TSH; ↔ Free T4; ↑ Total T4; estrogen effect
↓ TSH; ↑ Free T4; ↔ Total T4; estrogen effect
  ↔ TSH; ↔ Free T4; ↑ Total T4; progesterone effect
↔ TSH; ↑ Free T4; ↔ Total T4; progesterone effect
↓ TSH; ↔ Free T4; ↑ Total T4; progesterone effect
↓ TSH; ↑ Free T4; ↔ Total T4; progesterone effect