We don't recheck antigen typings here in our hospital in Canada. The typings that have been performed at Canadian Blood Services, are embedded in the barcode on the bag, with all negatives printed on the End User Label. Every unit is antigen typed for K so if it isn't printed on the bag the unit is K Pos. Antigen typings we do are all linked to the unit through barcode. The reason of, "We were typing a lot of units and may have mixed them up", is not acceptable in a blood bank setting. Go work in a different department if you can't organize yourself. Anyway, there is also a full gel or whatever you use crossmatch at the end of that phenotyping, as long as the antibody is reacting, an anomaly could be discovered there. You have to have a little faith that people before you are doing their job properly, or you can cause yourself a lot of undue stress.