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The Danish external quality assessment scheme

J M Christensen1, J Kristiansen

  • 1Department of Chemistry and Biochemistry, National Institute of Occupational Health, Copenhagen, Denmark.

Annali Dell'Istituto Superiore Di Sanita
|January 1, 1996
PubMed
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Proficiency testing schemes are crucial for analytical chemistry quality control. The Danish external quality assessment scheme (DEQAS) uses a method evaluation function for robust laboratory error assessment and reporting.

Area of Science:

  • Analytical Chemistry
  • Quality Control
  • Laboratory Science

Background:

  • Proficiency testing is essential for analytical chemistry quality control.
  • Effective schemes must assess a wide concentration range and both systematic and random laboratory errors.
  • Clear, comprehensible reporting of results is vital for participating laboratories.

Purpose of the Study:

  • To present the design of the Danish external quality assessment scheme (DEQAS).
  • To introduce the application of the method evaluation function concept in designing proficiency testing.
  • To ensure a comprehensive and understandable evaluation process for laboratories.

Main Methods:

  • Design of the Danish external quality assessment scheme (DEQAS).
  • Implementation of the method evaluation function concept.

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  • Development of a reporting system with text, tables, and figures for clear evaluation presentation.

    • Main Results:

    • DEQAS is designed to cover broad concentration ranges.
    • The scheme facilitates the detection and estimation of both systematic and random laboratory errors.
    • A comprehensible reporting format is established for laboratory feedback.

    Conclusions:

    • The DEQAS design effectively addresses key requirements for a robust proficiency testing scheme.
    • The method evaluation function provides a sound basis for assessing laboratory performance.
    • DEQAS aims to improve overall quality control in analytical chemistry through detailed error analysis and clear reporting.