It is the purpose of this article to supply more accurate data than have heretofore been available for total, differential and absolute leukocyte counts and sedimentation rates of healthy adults 19 years of age and over. This is one of a series of papers on hematologic standards for healthy persons from birth through adult life. The data for other age groups has been or will be reported here and elsewhere.1
The values given in most textbooks appear to have been copied from one book to another since the very early studies. Apparently no attention has been paid to the study by Galambos2 in 1912 or to the studies of Torday3 and Miller,4 who obtained similar results. Figures obtained by recent studies5 of healthy persons in various parts of the world also disagree with the textbook figures, but the differences were interpreted as probably due to climate, altitude or race. Actually,