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Retrospective analysis of 88,429 serum and urine glucose EQA results obtained from professional laboratories and medical offices participating in surveys organized by three European EQA centers between 1996 and 2007
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Pierre-Alain Morandi
Veröffentlicht/Copyright:
3. August 2010
Abstract
Background: The aim of this study was to provide inter-laboratory imprecision comparisons of different groups of diagnostic systems as well as a comparison of professional laboratories with medical offices performance on the basis of 88,429 glucose results obtained in external quality assessment (EQA) schemes organized by three European EQA centers between 1996 and 2007.
Methods: A simple, non-parametrical statistical model suited to all EQA results, including outliers, was used to calculate yearly and global performance.
Results: The best performance was obtained from professional laboratories with a group of three diagnostic systems – Hitachi, Integra, and Vitros, followed by Cobas Mira, and finally by Reflotron. For medical offices, the best performance was achieved with the Cobas Mira diagnostic systems, followed by the Reflotron, SpotChem, and Vitros DT60 diagnostic systems. A slight but overall improvement in performance over time was observed for most diagnostic devices.
Conclusions: The analysis of glucose EQA results collected over a 12-year period showed that professional laboratories obtained better performances than medical offices, and that a general improvement in yearly performance was observed for both types of laboratories.
Clin Chem Lab Med 2010;48:1255–62.
Keywords: EQA statistical procedure; external quality assessment; glucose analysis; inter-laboratory performance
Received: 2010-1-13
Accepted: 2010-4-8
Published Online: 2010-08-03
Published in Print: 2010-09-01
©2010 by Walter de Gruyter Berlin New York
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Schlagwörter für diesen Artikel
EQA statistical procedure;
external quality assessment;
glucose analysis;
inter-laboratory performance
Artikel in diesem Heft
- Editorial
- Lost in translation…wallowing in transformation?
- Reviews
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- Advancements in anemias related to chronic conditions
- Opinion Paper
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- Prevalence of atrophic gastritis in dyspeptic patients in Piedmont. A survey using the GastroPanel test
- Cardiovascular Diseses
- Diagnostic accuracy of B-type natriuretic hormone for congenital heart disease in the first month of life
- Carcinoembryonic antigen concentrations in patients with acute coronary syndrome
- Evolution of vitamin D binding protein concentration in sera from cardiac surgery patients is determined by triglyceridemia
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