Serial serum ferritin and other hematological parameters in normal Nigerian primigravidae.

Serial hematological indices using Coulter Counter and serum ferritin using radioimmunoassay techniques were determined in 20 healthy Nigerian primigravidae with hemoglobin genotype AA. PCV fell significantly (P less than 0.001) to a minimum value at 28 weeks that was 6% lower than the mean value at 8 weeks postpartum. PCV at 36 weeks was still significantly (P less than 0.001) lower than the post partum value. There was an insignificant but progressive increase in MCV values throughout pregnancy. Changes in MCH and MCHC were insignificant. Ferritin levels in both the non-pregnant and pregnant subjects were high and probably reflected the high iron content of Nigerian foods. Though the cord serum ferritin level was significantly higher (P less than 0.001) than maternal ferritin at delivery there was no significant correlation between the two.