the results show that the coefficient of variation of the hemoglobin concentration is relatively small ( about 5.5 per cent ) in the case of fresh human red cells in acd solution , that the coefficient of variation is almost doubled when the red cells have been stored for 6 weeks at 4 degrees c. or when heparin is used as an anticoagulant instead of acd solution , but that the average hemoglobin concentration is substantially the same in all three cases .
C0014792
red cells
C0019046
hemoglobin