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논문 기본 정보

자료유형
학술저널
저자정보
Deng Yuhang (National Center for Clinical Laboratories Beijing Engineering Research Center of Laboratory Medicin) Liu Qingxiang (National Center for Clinical Laboratories Beijing Engineering Research Center of Laboratory Medicin) Liu Zhenni (National Center for Clinical Laboratories Beijing Engineering Research Center of Laboratory Medicin) Zhao Haijian (National Center for Clinical Laboratories Beijing Engineering Research Center of Laboratory Medicin) Zhou Weiyan (National Center for Clinical Laboratories Beijing Engineering Research Center of Laboratory Medicin) Zhang Chuanbao (National Center for Clinical Laboratories Beijing Engineering Research Center of Laboratory Medicin)
저널정보
대한진단검사의학회 Annals of Laboratory Medicine Annals of Laboratory Medicine 제42권 제5호
발행연도
2022.9
수록면
575 - 584 (10page)
DOI
10.3343/alm.2022.42.5.575

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Background: To identify candidate external quality assessment (EQA) materials for normetanephrine and metanephrine measurements, we assessed the commutability of eight processed human plasma samples. The agreement between routine assays and the candidate reference measurement procedure (cRMP) was also evaluated. Methods: Fifty-three clinical samples and eight processed plasma samples were prepared. The processed samples included pooled and individual plasma samples spiked with pure normetanephrine and metanephrine and non-spiked pooled and individual plasma samples. The clinical and processed samples were subjected to four routine isotope dilution tandem mass spectrometry assays and cRMP. Commutability was assessed based on two approaches recommended by the CLSI and International Federation of Clinical Chemistry (IFCC). Passing?Bablok regression and Bland?Altman analysis were used to evaluate the agreement between the routine assays and cRMP. Results: The commutability results of the CLSI approach were better than those of the IFCC approach. For the CLSI approach, spiked individual plasma samples and spiked high-concentration pooled plasma samples were commutable for all routine assays for both analytes. The non-spiked pooled plasma sample was commutable for two out of four routine assays for metanephrine and three out of four routine assays for normetanephrine. The agreement between the routine assays and the cRMP was satisfactory, except for one routine assay showing significant bias. Conclusions: High-concentration spiked pooled plasma samples and spiked individual plasma samples are candidate EQA materials for normetanephrine and metanephrine measurements.

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