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Fig. 2.

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Fig. 2. OLR and BA plots of the agreement between the ID-LC–MS/MS method and the six routine immunoassays before recalibration. (A, C, E, G, I, and K) OLR plots for the Roche, Mindray, Snibe, Abbott, Beckman, and Siemens assays, respectively. (B, D, F, H, J, and L) BA plots for the Roche, Mindray, Snibe, Abbott, Beckman, and Siemens assays, respectively.
Abbreviations: ID-LC–MS/MS, isotope dilution liquid chromatography–tandem mass; OLR, ordinary linear regression; BA, Bland–Altman.
Ann Lab Med 2023;43:345~354 https://doi.org/10.3343/alm.2023.43.4.345

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