SIMULTANEOUS MEASUREMENTS OF THE BLOOD VOLUME IN MAN AND DOG BY MEANS OF EVANS BLUE DYE, T1824, AND BY MEANS OF CARBON MONOXIDE. I. NORMAL SUBJECTS 1

Abstract
Measurements of circulating blood vol. in normal men and dogs by the distribution of T-1824 and of CO, given simultaneously, were often but not always found to be numerically equivalent. In some subjects, the dye method gave the larger values, in others the CO method. Avg. values for blood vol./unit body wt. were almost identical by the 2 methods. There is no proof at present that their method regularly measures absolute blood vol.