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Proficiency testing has improved laboratory quality for 40 years, meeting clinical needs. However, new challenges like regulating physician office labs and evolving methodologies require updated evaluation systems for continued progress.

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Area of Science:

  • Clinical Laboratory Science
  • Medical Diagnostics
  • Quality Assurance

Background:

  • Proficiency testing (PT) has been integral to interlaboratory quality improvement for over four decades.
  • Its integration with the regulatory process for nearly 20 years has driven significant improvements in US laboratory work quality.
  • Despite successes, the synergy between regulation and education in PT remains suboptimal.

Purpose of the Study:

  • To evaluate the historical success and current challenges of proficiency testing in clinical laboratories.
  • To identify limitations in current PT grading and performance evaluation systems.
  • To explore the need for updated approaches to maintain the promise of PT.

Main Methods:

  • Analysis of the historical impact of proficiency testing on laboratory quality.
  • Examination of the evolving landscape of clinical laboratory methodologies and regulatory demands.
  • Assessment of the suitability of existing PT grading and evaluation systems.

Main Results:

  • Laboratory quality, particularly precision, has significantly improved and often meets or exceeds clinical requirements.
  • The expansion of "physicians' office laboratories" presents new regulatory and logistical challenges.
  • Current grading and evaluation systems are becoming inadequate due to advancements in laboratory methodologies.

Conclusions:

  • Proficiency testing has largely fulfilled its promise of enhancing laboratory quality.
  • Existing PT frameworks face challenges with new laboratory types and advanced techniques.
  • Further innovation and knowledge are essential to adapt PT for the future of the clinical laboratory community.