TSH and Pregnancy: Treat the Test or the Patient?

TSH and Pregnancy: Treat the Test or the Patient?

Susan is newly pregnant. She had some thyroid tests done earlier this year and was diagnosed with subclinical hypothyroidism. Her TSH was 6 mIU/ml with a normal thyroxine and negative anti thyroid antibodies. She has read in a forum online that she needs to be treated with thyroxine but she is worried about taking medication when pregnant. What do you advise her?