Evaluation of complement system function and C3 and C4 levels in patients with recurrent spontaneous abortion

Introduction: Recurrent miscarriage is the most common pregnancy problem and is often defined as two or more recurrent miscarriages before the twentieth week of pregnancy. The complement system with the mechanism of lysis of bacteria and extracellular pathogens focuses on the elimination of these foreign agents and can be effective in regulating normal pregnancy and preserving or rejecting the semiallogeneic fetus. The aim of this study was the evaluation of the function of the complement system and the levels of C3 and C4 in patients with recurrent miscarriage.