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An Italian external quality assessment (EQA) program on urinary sediment.

Giovanni B Fogazzi1, Sandra Secchiero, Dario Consonni

  • 1Research Laboratory on Urine, Unità Operativa di Nefrologia, Dialisi, Trapianto, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milano, Italy. fogazzi@policlinico.mi.it

Clinica Chimica Acta; International Journal of Clinical Chemistry
|March 11, 2010
PubMed
Summary
This summary is machine-generated.

External quality assessment (EQA) programs for urinary sediment analysis are rare but valuable. This Italian EQA initiative demonstrates significant improvements in laboratory performance over time.

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Area of Science:

  • Clinical Chemistry
  • Laboratory Medicine
  • Urinalysis

Background:

  • External quality assessment (EQA) programs for urinary sediment analysis are infrequently available.
  • An Italian EQA program for urinary sediment was established in 2001 and now includes over 300 laboratories.

Purpose of the Study:

  • To assess the effectiveness and necessity of EQA programs in urinary sediment analysis.
  • To evaluate laboratory performance in identifying urinary sediment components and their clinical associations.

Main Methods:

  • The program utilizes annual questionnaires and four annual surveys.
  • Surveys involve identifying urinary sediment particles from images and diagnosing clinical cases with image and history.
  • Results are scored, commented upon, and repeated assessments track improvement.

Main Results:

  • Initial questionnaires revealed deficiencies in methodological aspects of urinary sediment analysis.
  • Participant accuracy in identifying cells, lipids, casts, and contaminants improved with repeated exposure.
  • Correct identification rates for clinical associations were high (>84%), with specific case diagnoses ranging from 77.3% to 94.4%.

Conclusions:

  • EQA programs for urinary sediment analysis are both beneficial and essential.
  • The Italian EQA program demonstrates a positive impact on laboratory diagnostic capabilities.