“…Previously, total body potassium has been related to body weight (m-equiv K/kg BW) (mmol K/kg BW) and age (Anderson and Langham, 1959;McNeill and Green, 1959;Baarli, Madshus, Liden, and McCall, 1961;Blahd, Cassen, and Lederer, 1962;Delwaide, Verly, Colard, and Boulenger, 1962;Remenchik and Miller, 1962;Von Dobeln, 1962;Meenely, Ball, Ferguson, Payne, Lorimer, Weiland, Rolf, and Heyssel, 1962;Woodward, Trujillo, Schuch, and Anderson, 1965;Oberhausen and Onstead, 1965;Hughes, Williams, and Smith, 1967;Allen, Anderson, and Langham, 1969).The ranges (± 2 x coefficient of variation) were about ± 20 to 40 %. However, the usefulness of m-equiv K/kg BW (mmol K/kg BW) as an index is limited also by the aberrations in body weight in conditions such as obesity, oedema, and starvation.…”