A survey of haematological variables in 600 healthy Nigerians.

625 healthy Nigerians were studied for investigation of Haemoglobin concentration, leucocyte count, Erythrocyte sedimentation rate, Blood group and haemoglobin genotype. Haemoglobin levelin healthy adult Nigerians are Males 13.5 gm%, Female 11.3 gm%. There is no change in the haemoglobin level with storage and no difference in females studied in pre and post mentrual stages. These figures are lower than for Europeans. The white blood count for adult males is mostly in the range 2,000-5,000 cells/cmm and adult female range 5,000-8,000 cells/cmm. There is a reduction in the leucocyte count with storage. These figures are again lower than for Europeans. Erythrocyte sedimentation rate in males is mostly 0-3 mm/hr Westergren for males and 10-20 mm/hr for women. The ABO Blood group is distributed differently from that in Europeans and is Gp 0-53.5% Gp A-27%, Gp B 17.5% Gp AB-4%. Haemoglobin Genotypes are AA-77.5% AS19.6%; AC 0.8%; CC-0.8%; SC-0.8%; SS-0.4%.