I took the exam and passed in December 2006. I recommend purchase on the AABB website...Transfusion Medicine Self Assesment and Review. It presents scenarios which require that you put together lots of information to come up with the best answer. This is how you will be tested on the exam so it gives you good practice. I highly recommend attendance at the SBB Last Chance Review sponsored by the Gulf Coast Regional Blood Center in Houston, Texas. They offered it in February of that year; It was an extremely good outline of what you needed to know to pass the exam. Of course, have your own copy of the current Technical Manual and AABB Standards. Daniel's Human Blood Groups is a great book to memorize as well. Best of Luck.