Metabolomics data of PPP and glutathione-related metabolites comparing RBCs stored for 2 days or 35 days in SAGM. The boxplots show metabolite concentrations in RBCs before transfusion. Line plots indicate the median with 25th and 75th percentile of metabolite concentrations over time in the recovered RBCs, up to 1 day after transfusion. *P < .05, **P < .01, and ***P < .0001; NS, not statistically significant.