Stored platelet recoveries and survivals as a percentage of control platelets (fresh or 1-day plasma-stored platelets). (A) Stored platelet recoveries compared with control platelets. (B) Stored platelet survivals compared with control platelets. Shown are the 2-sided LCLs for the mean difference between the stored platelets and the proportion of the fresh or 1-day plasma platelets (control platelets) specified by the FDA criteria. The LCLs are a function of both the means and standard deviations of these differences. These limits have been transformed to a percent of control scale. The horizontal, dashed lines show the critical values specified by FDA’s poststorage platelet viability criteria; ie, platelet recoveries should be ≥66% and survivals ≥58% of each subject’s paired control platelets. ●, data for Haemonetics MCS+ platelets in CLX bags; ○, in CPP bags; ▪, for Trima platelets in Terumo BCT bags; and □, in Haemonetics CLX bags.