Lifespan of the fetal RBC is approximately :
In contrast to the adult RBC lifespan of 120 days, the lifespan of the neonatal erythrocyte is only 60 to 90 days with preterm infants having an even shoer life span of 35 to 50 days.6 Hb F has a tendency to denature and damage the membrane from within, contributing to the shoened the red cell lifespan.Rh factor is developed by 38 days. Pearson HA. Life-span of the fetal red blood cell. J Pediatr. 1967;70:166-71.
50 days
80 days
100 days
120 days
General obstetrics