Efficiency of in vivo Labeling of Red Blood Cells with99mTc

Abstract

SummaryThe effectiveness of three commercial bone scintigraphic agents and freshly made stannous chloride in labeling erythrocytes with 99mTc was compared. Our results indicate that tin pyrophosphate is the agent of choice and that it is most effective when injected at least 15 minutes before the 99mTc-per-technetate is administered. This technique of labeling red blood cells in vivo could be applied in performing blood pool studies.