Warm autoantibody and alloadsopbtion

I have seen WARM work fine many times (although multiple autoadsorptions are frequently required) but I did see one patient once that it did nothing for. I assume her autoantibody was directed at an antigen that was destroyed by the WARM treatment. As others have said, you can't use it for the patient in the original post because of the recent transfusion. I also think it is safer than just giving least incompatible blood even if you could adsorb out a rare antibody that the WARM treatment will make undetectable.