Post transfusion recovery (PTR) PAGGGM stored RBCs. (A) PTR is significantly different between 35-day stored SAGM and PAGGGM RBCs over time, but not at a specific time point. (B) Thirty-five days of storage in SAGM results in decreased PTR compared with 2 days of storage in SAGM. The line plot indicates the median with 25th and 75th percentile of PTR over time, up to 90 days after transfusion.