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  1. The usefulness of calibration verification and linearity surveys in predicting acceptable performance in graded proficiency tests.

    Article - En anglais


    - To assess the association between performance on graded chemistry surveys and evaluation of linearity and calibration in Linearity surveys.


    - Data from Linearity Surveys (LN series) and from routine comprehensive College of American Pathologists chemistry surveys (all series) were used to evaluate the hypothesis that laboratories with nonlinear or unverified calibration would have a greater likelihood of unacceptable performance on comprehensive chemistry surveys.


    - This study found that acceptable calibration verification evaluation is significantly related to acceptable rates for most analytes, including albumin, calcium, chloride, glucose, iron, magnesium, sodium, total bilirubin, uric acid, high-density lipoprotein cholesterol, triglycerides, alkaline phosphatase, alanine and aspartate aminotransferase, digoxin, gentamicin, phenobarbital, procainamide, and thyroxine.


    - There is a consistent and strong relationship between calibration verification problems in the Linearity Surveys and failure rates in the College of American Pathologists chemistry surveys.

    Laboratories with poor calibration evaluations on Linearity Surveys have higher unacceptable rates on proficiency tests.

    Individual laboratories who were rated linear and whose calibration was verified by Linearity Surveys have lower unacceptable rates.

    Mots-clés Pascal : Etats Unis, Examen laboratoire, Analyse biochimique, Assurance qualité, Contrôle qualité, Etalonnage, Equipement laboratoire, Technique mesure, Etude comparative, Amérique du Nord, Amérique, Biochimie

    Mots-clés Pascal anglais : United States, Laboratory investigations, Biochemical analysis, Quality assurance, Quality control, Calibration, Laboratory equipment, Measurement technique, Comparative study, North America, America, Biochemistry

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 95-0509934

    Code Inist : 002B30A05. Création : 01/03/1996.