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Evaluation of an Electrolyte Analyser for Measurement of Concentrations of Ionized Calcium and Magnesium in Cats

Unterer, S. ; Gerber, B. ; Glaus, T. ; Hässig, M. ; Reusch, C.

In: Veterinary Research Communications, 2005, vol. 29, no. 8, p. 647-659

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    Title
    • Evaluation of an Electrolyte Analyser for Measurement of Concentrations of Ionized Calcium and Magnesium in Cats
    Author
    • Unterer, S.. Clinic of Small Animal Internal Medicine, University of Zurich, Winterthurerstr. 260, CH-8057, Zurich, Switzerland
    • Gerber, B.. Clinic of Small Animal Internal Medicine, University of Zurich, Winterthurerstr. 260, CH-8057, Zurich, Switzerland
    • Glaus, T.. Clinic of Small Animal Internal Medicine, University of Zurich, Winterthurerstr. 260, CH-8057, Zurich, Switzerland
    • Hässig, M.. Clinic of Small Animal Internal Medicine, University of Zurich, Winterthurerstr. 260, CH-8057, Zurich, Switzerland
    • Reusch, C.. Clinic of Small Animal Internal Medicine, University of Zurich, Winterthurerstr. 260, CH-8057, Zurich, Switzerland
    Document Type
    • Postprint
    Language
    • English
    Published in
    • Veterinary Research Communications, 2005, vol. 29, no. 8, p. 647-659. Kluwer Academic Publishers
    Other Version
    OAI-PMH Identifier
    • oai:doc.rero.ch:321427
    Summary
    The goal of this study was to evaluate the Nova CRT 8 electrolyte analyser for determination of concentrations of ionized calcium (Cai) and magnesium (Mgi) in cats, todetermine the effects of sample handling and storage and to establish reference ranges. The precision and analytical accuracy of the Nova CRT 8 analyser were good. The concentrations of Cai and Mgi were significantly lower in aerobically handled serum samples than in those handled anaerobically. The concentrations of Cai and Mgi differed significantly among whole blood, plasma and serum. In anaerobically handled serum, the concentration of Cai was stable for 8 h at 22°C, for 5 days at 4°C and for 1 week at −20°C. The concentration of Mgi was stable for 4 h at 22°C but for less than 24 h at 4°C and for less than 1 week at −20°C. In serum from 36 cats, the reference ranges were 1.20-1.35 mmol/L for Cai and 0.47-0.59 mmol/L for Mgi. The Nova CRT 8 electrolyte analyser is suitable for determination of Cai and Mgi concentrations in cats. Anaerobically handled serum samples are recommended and, stored at room temperature, they yield accurate results when analysed within 4 h