Thyroid-stimulating hormone (TSH) serum levels and risk of spontaneous abortion: A prospective population-based cohort study.

Maryam Kianpour Ashraf Aminorroaya Massoud Amini Awat Feizi Sima Aminorroaya Yamini Mohsen Janghorbani

Published in: Clinical endocrinology (2019)

Our finding suggests that the upper limit for the TSH normal range should be redefined to <2.5 mIU/L during the first trimester of gestation. The local upper limit was 4.6 mIU/L, consistent with 4.0 mIU/L cut-off value recommended by the ATA.

Keyphrases

preterm infants
preterm birth