This session will review the difficulties with standardization of antibody titration testing. It will include a discussion of a recent article on a study designed to determine if a defined method would reduce the variability of the antibody titration test. Information will also be presented on problems and pitfalls associated with antibody titration testing. At the end of the presentations, there will be a lively panel discussion on variation and standardization of antibody titration and questions from the attendees will be addressed. Don't miss the opportunity to have your questions answered by the experts.