We had a case recently where a patient came in through the ER, she gave the nurse an Antibody card for a Jka that was identified years ago in Texas. When we called to get more info we were told that the patient was not coherent and no family was available. We did the screen (positive), and antibody Id and found a E, K (no sign of the Jka). 2 units were set up(E,K,Jka neg) and transfused. The next day they ordered 2 more units, a nurse from the floor called to say that the patient was insisting she had another antibody card that she could not find. I spoke to the patient and she told me she had 2 cards from different hospitals, she was also able to tell me all (or at least several) of the hospitals she had been transfused at. I proceded to call all of them and found another hospital in Texas that had identified E, c. We antigen typed the units she was given and 1 was c positive. Post transfusion had a lovely c. Morale of the story...Always listen to the patient....