Is CAP changing its requirements, too. I hate to disagree with JCAHO but isn't this overkill? At the present time, we have two racks and QC 1 of them each day, alternating days. The same lot number is on each rack. We QC new lot numbers before they're put into use. With the type and screen reagents I've never seen a QC failure in my 20 + years as a blood banker except a contaminated A and B cell when someone had switched the tops and those were still useable. This rule is going to be time and reagent consuming for those places which use 10 - 20 racks. I didn't know JCAHO went so in depth in the Blood Bank, I thought they left that up to CAP, CLIA and AABB. Lu