“…The reason the anti-phospholipid antibody (IgG-IgM) concentration increase in the miscarriage women and the pregnancy failure group may be because coagulation syndrome is a blood clotting disorder that causes blood to clot in the capillaries, which may be because of the lack of blood flow and into the uterus, This leads to a weak endometrium, and thus, reduces fetal consistency in the uterus, which increases the possibility of miscarriage or pregnancy failure, while in the case of continuing the pregnancy (control group). The anti-phospholipid antibody (IgG-IgM) level is low, which means that no thrombus in the capillaries, and thus the blood flow is normal and therefore so that the fetus is a strong adhesion due to the strength of the inner lining of the uterus, which leads to the lack of miscarriage, and these results are consistent with other researches (Gao et al ., 2019 ) and (Mansour et al ., 2020) they showed that the increase in the level of anti-phospholipids antibody (IgG-IgM) in aborted women during the first trimester of pregnancy, compared with non-pregnant women, was about 15 %.…”