At first all the participants GDM causes significant and often potentially maternal and fetal complications including
preeclampsia, polyhydramnios, fetal macrosomia, birth trauma, perative delivery, neonatal metabolic complications and perinatal death. Development of obesity and diabetes in offspring during childhood and later development of diabetes mellitus in the mother are also related with GDM. Therefore, accurate screening and early diagnosis of this condition is very important to allow timely intervention in order to make certain a satisfactory pregnancy outcome (4).