THE EQUILIBRATION OF RADIOSODIUM (Na24), RADIOPOTASSIUM (K42), AND DEUTERIUM OXIDE (D2O) IN HYDROPIC HUMAN SUBJECTS 1

Abstract
The equilibration of Na24 with the readily exchangeable Na requires at least 24 hours, the equilibration of K42 requires 48 hours, and that of D2O, 6 hours in hydropic subjects. Approximately 94% of exchangeable K and 100% of total body water are measured with equilibration periods as detailed.