Question

A 30-year-year-old pregnant woman (8 weeks) with primary hypothyroidism on levothyroxine 100 µg has TSH 3.8 mIU/L (lab range 0.4-4.0). What is the recommended action?

Accepted Answer

Increase levothyroxine dose by ~25-30% now

Answer

No change; recheck at 28 weeks

Answer

Reduce levothyroxine to 75 µg

Answer

Switch to liothyronine

Answer

Stop levothyroxine and recheck in 6 weeks

Practice question

A 30-year-year-old pregnant woman (8 weeks) with primary hypothyroidism on levothyroxine 100 µg has TSH 3.8 mIU/L (lab range 0.4-4.0). What is the recommended action?