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. 2021 Jan 27;196:113927. doi: 10.1016/j.jpba.2021.113927

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Fig. 3 — Stability of VC in plasma and precipitant under various storage conditions. HQC (n = 6) and LQC (n = 6) were used. The accuracy of 85 %-115 % was highlighted with red dotted lines. VC, vitamin C; HQC, high-concentration quality control; LQC, low-concentration quality control; RT, room temperature; *, time for which VC was stable.