ABSTRACT
The physiological changes in thyroid gland during pregnancy have been suggested as one of the pathophysiologic causes of preeclampsia. The aim of this study was comparison of serum levels of Tri-iodothyronine [T3], Thyroxine [T4], and Thyroid-Stimulating Hormone [TSH] in preeclampsia and normal pregnancy. In this case-control study, 40 normal pregnant women and 40 cases of preeclamsia in third trimester of pregnancy were evaluated. They were compared for serum levels of Free T3 [FT3], Free T4 [FT4] and TSH. The data was analyzed by SPSS software with the use of t-student, Chi-square, Independent sample T-test and Bivariate correlation test. P