Use of calcium-titrated sodium heparinate for ionized calcium determination on plasma and whole blood (heparinized blood sampler B-129 Radiometer)

C. Sachs Department of Physiology, University of Paris V, Necker-Enfants Malades Medical School, Paris, France

P. Rabouine Department of Physiology, University of Paris V, Necker-Enfants Malades Medical School, Paris, France

M. Chaneac Department of Physiology, University of Paris V, Necker-Enfants Malades Medical School, Paris, France

C. Kindermans Department of Physiology, University of Paris V, Necker-Enfants Malades Medical School, Paris, France

M. Dechaux Department of Physiology, University of Paris V, Necker-Enfants Malades Medical School, Paris, France

Abstract

We report modifications of ionized calcium as observed on specimens collected in a commercially available sampling device (Radiometer B-129). When the sampler is used as recommended, errors are non-significant around 1.25 mmol L^-1. There is a +3% increase for low (0.75 mmol 1^-1) values and a -2% decrease for high (2.50 mmol l^-1) values. Incomplete syringe-filling increases these errors.

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Use of calcium-titrated sodium heparinate for ionized calcium determination on plasma and whole blood (heparinized blood sampler B-129 Radiometer)

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Use of calcium-titrated sodium heparinate for ionized calcium determination on plasma and whole blood (heparinized blood sampler B-129 Radiometer)

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