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논문 기본 정보

자료유형
학술저널
저자정보
Eun-jung Cho (Hallym University College of Medicine) Sun Hyun Kim (Hallym University College of Medicine) Jinyoung Hong (University of Ulsan College of Medicine) Hyeyoung Lee (Catholic Kwandong University College of Medicine) Jungwon Hyun (Hallym University College of Medicine) Sung Eun Cho (Green Cross Laboratories) Woochang Lee (University of Ulsan College of Medicine) Hyun Soo Kim (Hallym University College of Medicine) Eun-Jee Oh (The Catholic University of Korea) Sail Chun (University of Ulsan College of Medicine) Won-Ki Min (University of Ulsan College of Medicine)
저널정보
대한임상검사정도관리협회 Journal of Laboratory Medicine And Quality Assurance Laboratory Medicine and Quality Assurance 제44권 제2호
발행연도
2022.6
수록면
111 - 120 (10page)
DOI
10.15263/jlmqa.2022.44.2.111

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Background: Commutability is essential to harmonize different measuring systems and to evaluate the performance of participating laboratories in external quality assessment (EQA). This study aims to assess the commutability of EQA materials in the tumor marker program of the Korean Association of External Quality Assessment Service. Methods: We analyzed commercial quality control (QC) materials, individual patient samples, and frozen human serum pools (FSPs) based on the Clinical and Laboratory Standards Institute guidelines. Alpha-fetoprotein (AFP), carcinoembryonic antigen (CEA), and total prostate-specific antigen (PSA) were assayed in triplicate in all samples using four analytical systems at the three laboratories. The results obtained from pairs of assays were plotted and assessed using Deming regression analysis. The criterion for commutability was a 95% prediction interval, and bias for noncommutability was calculated. Results: FSPs were commutable in all AFP, CEA, and total PSA assay methods. Bias for AFP, CEA, and total PSA ranged from ?203% to 27%, ?67% to 45%, and ?9% to 12%, respectively. Commercial QC materials for AFP and PSA were commutable in four assays, whereas for CEA, noncommutability was observed. Conclusions: Our results validated that the frozen serum pools were commutable across different platforms for tumor marker assays. Therefore, validation findings from materials like FSPs and information about their commutability needs to be reported, for the applicability of EQA programs.

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