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Clinical Chemistry 36: 1323-1327, 1990;
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Clinical Chemistry, Vol 36, 1323-1327, Copyright © 1990 by American Association for Clinical Chemistry

Reference values of magnesium and potassium in mononuclear cells and erythrocytes of children

WB Geven, GM Vogels-Mentink, JL Willems, T de Boo, W Lemmens and LA Monnens
Department of Pediatrics, University of Nijmegen, University Hospital Nijmegen, The Netherlands.

Reference values for magnesium and potassium contents of mononuclear cells and erythrocytes were estimated in cord blood and in children from infancy through adolescence. No differences were detected between results for boys and girls. The mononuclear magnesium content was independent of age and was within the adult range of values. No significant correlation was shown between magnesium in serum and in mononuclear cells. Mononuclear potassium also showed no age-related differences. The correlation between magnesium and potassium contents in mononuclear cells was significant: however, the correlation was lower when the magnesium and potassium contents were expressed in terms of protein potent: micromoles or millimoles per gram of protein, respectively. The concentration of magnesium in erythrocytes was significantly lower in cord blood and during the first month of life, compared with that at older ages, and showed no significant correlation with serum magnesium. The concentration of erythrocyte potassium was independent of age and showed a low but significant correlation with erythrocyte magnesium content.




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Copyright © 1990 by the American Association for Clinical Chemistry.