Abstract
Platelet concentrate (PC) was prepared in triple-unit bags which has a 30ml satellite bag made of polyolefin (PO), and stored in the PO bag for 120 hours at room temperature. Plasma pH of PC stored in the PO-bag was higher than that stored in a PVC bag, although the decreases of plasma pH in both bags were slight. Platelet count, platelet volume and β-TG leakage were about equal to the control, but %HSR was apparently higher in the PO-bag. Aggregability was also higher in the PO-bag. Furthermore, in vivo recovery and survival of platelets stored in a PO-bag exceeded the results of a PVC bag. These results suggest that platelet functions are maintained well in PO-bag when pH decrease dose not occur.
