Potassium-40 Content as a Basis for the Calculation of Body Cell Mass in Man

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Science  04 Jun 1965:
Vol. 148, Issue 3675, pp. 1336-1337
DOI: 10.1126/science.148.3675.1336


On the assumption that the potassium content of the body cell mass is constant it should be possible to estimate body cell mass by measuring potassium-40 activity with a whole-body scintillation counter. Relations of body cell mass to weight, lean body mass, and total body water are demonstrated.