Effect of Variations in Packed Cell Volume
using red cells and plasma from normal subjects, artificial mixtures were made
with a wide range of P.C.V. The volume of trapped plasma, expressed as a percentage of the volume of the red cell column is plotted in figure 1. The upper line represents the results of a single experiment in which the time of centrifuga
tion was 30 minutes. The lower hue is the composite of four experiments in which the time of centrifugation was 55 minutes. In both groups, trapping can