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Objective: The aim of our study was to evaluate serum high-sensitivity C-Reactive Protein (hs-CRP), sialic acid (SA), and interleukin-6 (IL-6) levels in pregnancies complicated with preeclampsia (PE) and intrauterine growth restriction (IUGR) and to compare with healthy pregnancies . Materials and Methods: This study was conducted at a tertiary-level maternity hospital with 80 pregnant women. Fasting blood samples were taken from 44 consecutive women with pregnancies complicated by PE ( n: 20) and IUGR ( n: 24), and 36 were from normal pregnancies. Serum hs-CRP, SA, and IL-6 concentrations were measured in all participants. Results: Serum mean hs-CRP, SA, and IL-6 levels were higher in the PE and IUGR group when compared with the control group, but this difference was statistically insignificant ( P>0.05). No significant correlation was observed between these inflammatory markers ( P>0.05). Conclusion: The serum levels of hs-CRP, SA, and IL-6 were not elevated in pregnancies complicated with PE and IUGR compared with normal pregnancies. Since pregnancy is already a process with inflammation, fluctuations in some markers related to inflammation may be masked by the gestation itself. A local subclinical inflammation may have a role in the pathogenesis of PE and IUGR rather than systemic inflammation.