text_1: I had a pregnant patient on Synthroid and I called Dr. X (endocrinologist).  He said to find out why she has hypothyroidism because it can make a difference to the baby.  I (investigator) asked, "What was the question when you called Dr. X?"  She said, "How do I manage thyroid replacement in pregnancy?  What laboratory tests do I need to follow?
text_2: How do I manage thyroid replacement in pregnancy?