Measurement of Whole Body Cellular and Collagen Nitrogen, Potassium, and Other Elements by Neutron Activation and Whole Body Counting

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Abstract
Whole body nitrogen can be measured by neutron activation analysis with an acceptable radiation dose; it is an index of body protein which, in normal subjects, is 65% cellular protein and 35% extracellular connective collagen. Whole body potassium can be measured by whole body counting without irradiating the subject; it is an index of body cell mass.