Glutathione metabolic changes in RBCs supplemented with QCG followed by PfCM stress. (A) Schematic of metabolic processes known to occur within RBCs from QCG amino acids. Peak area intensity of (B) GSH, (C) GSSG, and (D) total glutathione, as measured by LC-MS/MS (n = 3). A 1-way paired t test was used to analyze the data. ns, not significant; ∗P < .05; ∗∗P < .005.