Our system works pretty well, although not 100%. We require the nurse at the end of the transfusion to return the form to BB in person. We then check for completeness, reactions, and sign off if all is well, and give chart copy back to the nurse. If there are any errors, we do not sign off but BB supervisor (me) goes directly to the nursing director or charge nurse for clarification or correction of a problem. For example, we had 4 missing forms for the month of November and a team of nurses then is responsible to go hunting. The slips usually end up on the patient's chart but 2-3 times a year it's entirely missing and we incident report those. Eventually we aim to go to bedside (paperless) transfusions with our upcoming software transition-can't wait (we are currently still on paper in BB and have about 5K transfusions per year).