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Clinical Chemistry 38: 2096-2100, 1992;
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Clinical Chemistry, Vol 38, 2096-2100, Copyright © 1992 by American Association for Clinical Chemistry

Axon clinical chemistry analyzer evaluated according to ECCLS protocol

S Brenna and L Prencipe
Laboratorio di Biochimica Clinica ed Ematologia, Ospedale Ca Granada, Niguarda, Milano, Italy.

We assessed the analytical performance of the Axon system (Bayer Diagnostici), according to the European Committee for Clinical Laboratory Standards guidelines, for assay of 12 analytes: cholesterol, creatinine, glucose, total protein, urea, uric acid, alkaline phosphatase, alpha-amylase, aspartate aminotransferase, creatine kinase, sodium, and potassium. The field evaluation lasted approximately 5 months and involved the collection of approximately 10,000 data points with the Axon. The following results were obtained: The highest CVs for controls and human sera at different concentration/activity values were 2.2% for within-run imprecision (n = 60; 3 days, pooled estimate) and 3.5% for the between-day imprecision (n = 20 days). Close correlation was found with results for patients' specimens assayed with comparative instruments (Hitachi 717 for substrates and enzymes, Beckman Synchron EL/E4A for electrolytes). No drift was observed during 8 h of operation. The linearity range was broad, sometimes exceeding the manufacturer's claims. No sample-, reagent-, or cuvette-related carryover was found. Measurement of control sera gave results within +/- 5% of the assigned values. We conclude that good reliability and practicability make the Axon system suitable for laboratories with various needs.




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Copyright © 1992 by the American Association for Clinical Chemistry.