Do elevated thyrotropin levels increase the risk of miscarriages: yes or no?

Background: To examine correlation between elevated levels of thyrotropin with the frequency of miscarriages.

Methods: A cross-sectional study was conducted on the 380 respondents and it investigated TSH (thyrotropin), thyroid peroxidase antibody(anti-TPO) and free thyroxine (FT4) in pregnant women who had a miscarriage ( = 179) and pregnant women with normal pregnancies ( = 201).

Results: The incidence of subclinical hypothyroidism in the miscarriages group was higher than in control group (61.