Abstract Aims High bisphenol A (BPA) concentration may compromise normal placental development. The aim of this study was to determine maternal serum BPA concentrations in pregnant women with complicated preeclampsia (PE) and normal pregnant women, to compare BPA concentrations, and to examine pregnancy outcomes. Methods This prospective case–control study was conducted between March 2021 and October 2021. Serum BPA levels of preeclamptic pregnancy and normal pregnancy were statistically evaluated. In addition, the PE group was divided into three subgroups according to the course of pregnancy. Group 1: patients with non‐severe PE who delivered at 37?weeks or later, Group 2: patients with severe PE who delivered at less than 34?weeks, Group 3: patients with severe PE who delivered between 34 and 37?weeks. The association between BPA levels and pregnancy outcome was investigated. Results Forty‐six cases in the PE group were compared with 46 cases of normal pregnancies. The median BPA level was 19.46?ng/mL in the PE group and 16.36?ng/mL in the control group. The median BPA levels in the PE group were significantly higher than those in the control group (p?=?0.007). Serum BPA levels were significantly lower in women who delivered at 37?weeks or later than in women who delivered at less than 34?weeks due to severe PE (p?≤?0.018). Conclusion Our study highlights the association between elevated maternal serum levels of BPA and PE. Moreover, knowledge of BPA levels in women with PE may provide information about the prognosis of pregnancy.
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