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pISSN 2384-2458 eISSN 2288-7261
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Original Article

Lab Med Qual Assur 2021; 43(1): 9-18

Published online March 31, 2021

https://doi.org/10.15263/jlmqa.2021.43.1.9

Copyright © Korean Association of External Quality Assessment Service.

New Classification System of Measurement Methods for Clinical Chemistry Program of Proficiency Test

Yong-Wha Lee , Jeong Gwon Kim , Kung Wan Nam , and Byung Ryul Jeon

Department of Laboratory Medicine and Genetics, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea

Correspondence to:Yong-Wha Lee
Department of Laboratory Medicine and Genetics, Soonchunhyang University Bucheon Hospital, Soonchunhyang University College of Medicine, 170 Jomaru-ro, Wonmi-gu, Bucheon 14584, Korea
Tel +82-32-621-5943
Fax +82-32-621-5944
E-mail lywmd@schmc.ac.kr

Received: October 28, 2020; Revised: January 20, 2021; Accepted: February 22, 2021

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background: The current status of the method classification system for each test of the general chemistry test program included in the proficiency test of the Korean Association of External Quality Assessment Service (KEQAS) was investigated. A revised method classification system for the general chemistry program based on the related data and relevant literature was proposed.
Methods: The classification status of the test methods was investigated for 28 test items registered in the general chemistry program in the proficiency test of the KEQAS, and the test methods and principles were reviewed. Instructions for instruments and reagents were obtained from the manufacturers and reviewed. Based on this, a newly revised test method classification system for each of the general chemistry programs was established.
Results: The current and revised classification systems were compared, and an adequate test method was assigned to each reagent according to the new classification system. The test method and principle, revised classification system proposal and related evidence, and the comparative analysis of the current classification system and the reorganized new classification system are presented on www.schlab.org. Moreover, it was made available to the manufacturers and participating laboratories.
Conclusions: The improvement of the classification system for the general chemical test program test method could provide more reliable information and credible survey data suitable for the reagents used by participants. Through the revised system, misclassification and omission of data from the proficiency test can be prevented and more reliable survey results and accurate peer group analysis can be achieved.

Keywords: Proficiency test, Clinical chemistry, Laboratory test

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