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Fig. 1.

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Fig. 1. Representative chromatograms of C-peptide and IS in a serum sample. (A) C-peptide (820.0 pmol/L): m/z 1,007.7 → 147.2, (B) IS (1100.0 pmol/L): m/z 1,011.7 → 147.2.
Ann Lab Med 2023;43:345~354 https://doi.org/10.3343/alm.2023.43.4.345

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