Donnan Effect or Protein Interference in Ionised Calcium Measurements?
- 1 September 1983
- journal article
- research article
- Published by SAGE Publications in Annals of Clinical Biochemistry: International Journal of Laboratory Medicine
- Vol. 20 (5) , 271-273
- https://doi.org/10.1177/000456328302000504
Abstract
The observation that the ionised calcium concentration is higher if measured in the original serum sample than in an ultrafiltrate is examined by means of a theoretical model. It is concluded that this difference is a predictable consequence of the Donnan equilibrium and is not a result of protein interference with the calcium-specific electrode.This publication has 6 references indexed in Scilit:
- PrefaceScandinavian Journal of Clinical and Laboratory Investigation, 1983
- Clinically Significant Effect of Protein Concentration on Ion-Selective Electrode Measurements of Ionised CalciumAnnals of Clinical Biochemistry: International Journal of Laboratory Medicine, 1982
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- Evaluation of a new semiautomatic electrode system for simultaneous measurement of ionized calcium and pHScandinavian Journal of Clinical and Laboratory Investigation, 1982
- Determination of Calcium Fractions of Serum. I. The Separation of Protein-bound and Protein-free Fractions by Means of a Simplified Ultrafiltration TechniqueScandinavian Journal of Clinical and Laboratory Investigation, 1969
- Theorie der Membrangleichgewichte und Membranpotentiale bei Vorhandensein von nicht dialysierenden Elektrolyten. Ein Beitrag zur physikalisch‐chemischen Physiologie.Berichte der Bunsengesellschaft für physikalische Chemie, 1911