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. 2023 Jul 25;12(1):A0128. doi: 10.5702/massspectrometry.A0128

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Copyright @ 2023 Erika Nagano, Kazuki Odake, and Shuichi Shimma.

This is an open-access article distributed under the terms of Creative Commons Attribution Non-Commercial 4.0 International License, which permits use, distribution, and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Fig. 4. Evaluation of TPP-DA calibration curves using mimic tissue. (A) Without IS. (B) With IS. DA, dopamine hydrochloride; DA-d4, dopamine-d4 hydrochloride; IS, internal standard; RSD, relative standard deviation; TPP, triphenylpyrylium tetrafluoroborate.