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=1719000638&Signature=vjaE81WxRaCrCwVgeg6j7ATlQVmXCfHOlNFg~V~1IBnKfDmjm5znJdNm~zP94qmTFKkfc0VQSSRQNAllkd6GJP9aNENbZ7qmnY3oxjuVke-Iv1dvZMWpa1sOaBvNkeLfY80GT6ArhZ8faSEPPE-26Fq6l12GVIAImpcjDJn6XdkGfSyUgtbIYK9lOQVJz8-WFa8DXOM3ryghhOgimxB0PV2OZrTdmBREG9rBJL9ZbStzI8acpRjGisiNPPArZNopLFq1GcYm41iSZ7kfQhr8D8PRzs-3Z7MB2BqqSzJBANKXdPwd3g6zyZdaxDvgwiOOZ15O7rw8COPf1n2~ecczEw__&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.
