Fig. 2. Passing–Bablok regression curves of the direct assay vs. the extraction assay. (A) Beckman-D vs. Beckman-E. (B) Siemens-D vs. Siemens-E.
Abbreviations: D, direct assay; E, extraction assay.

Ann Lab Med 2024;44:29~37 https://doi.org/10.3343/alm.2024.44.1.29