Effect of thyroxine treatment on pregnancy outcomes in infertile japanese women with tsh levels between 2.5 μiu/ml and the upper reference limit: A retrospective study

Abstract

Recent randomized controlled studies have revealed that levothyroxine (LT4) treatment improves pregnancy outcomes only in infertile women with subclinical hypothyroidism who have thyroid autoantibodies (TAs), but not for those with high TSH levels within the normal range who have TAs. Here, we retrospectively investigated pregnancy outcomes in infertile Japanese women with 2.5 μIU/mL ≤ TSH < URL regardless of TA status in this study.