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. 2019 Feb 26;39(4):381–387. doi: 10.3343/alm.2019.39.4.381

Fig. 1. Passing-Bablok regression analyses between immunoassays (A, Abbott; B, Autobio; C, Beckman-Coulter; D, Mindray; E, Roche; F, Siemens) and ID-LC-MS/MS. Solid black line: Passing-Bablok regression line, dashed brownish red lines: 95% CI for the regression line, dotted blue line: identity line (x=y).

Fig. 1

Abbreviations: TT4, total thyroxine; ID-LC-MS/MS, isotope-diluted liquid chromatography-tandem mass spectrometry; CI, confidence interval.