Figure 2
![Figure 2. Potassium levels do not change and calcium levels decrease after transfusions of older RBCs. The mean ± SEM for serum levels of (A) potassium, (B) total calcium, and (C) corrected calcium calculated as [(0.8 × (4.0 − subject's albumin)) + serum calcium]. The vertical arrow indicates the pretransfusion time point; and dotted lines, the reference ranges. The P values are as specified in the figure comparing the paired area under the curve of the mean of the outcome parameter for the N = 14 volunteers from 0 to 24 hours after the fresh and older RBC transfusions.](https://ash.silverchair-cdn.com/ash/content_public/journal/blood/118/25/10.1182_blood-2011-08-371849/4/zh89991183020002.jpeg?Expires=1735830140&Signature=hD~~2wVVb~lVygHtdZIyaSDef4Rnax4hT1i9~9RyEMc1Tg3AcjJx2rE2cdyCZbfNykm0~rNY30JqkW3evsOB78AvgPJp-fi7zcn4EgVUxHeyfrmo4LfnxFVeTnz566060S9MhqkaRBE49ZFxOEOshPtBSVpfIrp1iIzDNsZXw57aWmarYEAjeWuLE3sF-PcSjO0fjq5o~4rNGXesuToO84ieYa8C5NgxvEU73kWOM528nf~B13R5-dlBW3tjXaPR5evIzv1~pZmbzrXy2VYNut91LsykVh82cBvrAq4O~pYcvdxTg6ZGVanNBC44u-knUt3x8vbREoPxYuNIXVoHLQ__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Potassium levels do not change and calcium levels decrease after transfusions of older RBCs. The mean ± SEM for serum levels of (A) potassium, (B) total calcium, and (C) corrected calcium calculated as [(0.8 × (4.0 − subject's albumin)) + serum calcium]. The vertical arrow indicates the pretransfusion time point; and dotted lines, the reference ranges. The P values are as specified in the figure comparing the paired area under the curve of the mean of the outcome parameter for the N = 14 volunteers from 0 to 24 hours after the fresh and older RBC transfusions.
