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. Author manuscript; available in PMC: 2014 Mar 1.
Published in final edited form as: Transfusion. 2012 Jun 28;53(3):606–611. doi: 10.1111/j.1537-2995.2012.03765.x

Figure 2. G6PD activity during RBC storage.

Figure 2

a. Cross-sectional study of G6PD activity in 161 randomly-selected pRBC units in the general inventory. G6PD activity was measured in the attached segments of units selected for the following storage intervals: Day 7 (n=32), 14 (n=33), 21 (n=33), 28 (n=30), 35 (n=17), and 42 (n=16). Mean activities at each time-point were compared using the Kruskal-Wallis test. There was no significant difference in G6PD activity during the storage period examined (p=0.4). One unit selected at 28 days of storage was identified as G6PD deficient. b. Longitudinal study of G6PD activity in 16 purchased pRBC units (bags and segments), serially measuring activities beginning at Day 5 or 6 of storage and ending at Day 42. There was no significant difference in G6PD activity between day 5 or 6 and day 42 of storage in bags (p=0.3, paired t test) or segments (p=0.2, paired t test). ns=not significant.