The post-transfusion survival of multiple units of concentrated red cells
was measured by ^51chromium automated differential agglutination and double
51chromium technics. Since the mean 24 h survivals were similar with both assay
methods, these methods are considered acceptable in evaluating red cell preservation.
Analysis of the paired data, however, revealed a significant difference in the
results, indicating that an average of 3 % of ^51chromium eluted from red cells during
the first 24 h.