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Fig. 1.

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Fig. 1. Schematic representation of the plasma sample handling and processing procedures utilized in this study. (A) Immediate storage of non-stabilized plasma at –80°C, followed by HPLC-UV analysis. (B) Addition of the PCA/DTPA stabilizing agent to the plasma aliquot (1:1, v:v) and storage at –80°C, followed by HPLC-UV analysis. Abbreviations: PCA, perchloric acid; DTPA, diethylenetriaminepentaacetic acid; HPLC-UV, high performance liquid chromatography with ultra-violet detection.
Ann Lab Med 2021;41:414~418 https://doi.org/10.3343/alm.2021.41.4.414

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