Endocrine Abstracts

The aim of our study was to evaluate the reference ranges of thyrotropin (TSH) and free thyroxin (FT4) assayed with 5 methods at the second and the third trimesters of pregnancy for women with iodine intake at the lower limit of the normal range. This study used 297 sera (42 controls without pregnancy with age <40 years, 139 women at the second trimester and 116 at the third with mean age to 27 years in both groups). The assays were for TSH (Elecsys Roche), for thyroproxid...