My busy transfusion service is inquiring as to what other facilities do for QC? We have recently been using the corQC kit from Immucor. There are some who think all phases of the antibody screen (IS, 37, Coombs, and Check Cells) need to documented. The product insert specifies adding potentiator, incubating for 15-20 minutes at 36-38 C, washing, adding Coombs serum, grade and record results. Just wondering what others do who may be using the same product or doing QC another way. Thanks.