Cited reference is correct or some thing else is there
This expiry is based on criteria set by the United States of America Food and Drug Administration, which requires that 75 percent of transfused RBCs must be recoverable in the peripheral blood circulation 24 h after transfusion 1.
1. Roback JD, Combs MR, Hillyer CD. AABB Technical Manual. 16th ed. Maryland, USA: American Association of Blood Banks; 2008.