background: asphyxia is a common cause of perinatal mortality in 5-10% of all births worldwide. the present parameters for determining perinatal asphyxia, e.g. preeclampsia, cannot be considered as markers per se, and require auxiliary markers, e.g. increased number of nucleated red blood (nrbc) cells, for early diagnosis of perinatal asphyxia. objective: in this study, we evaluated the mean nr...