There have been many improvements over my career. Now, of course, we have barcode scanners being used by our phlebotomists which have greatly decreased the number of mislabeled samples. We also have Epic BPAM for transfusions. However, we are all human and we still have the rare specimen error, usually in a hurried/emergent situation (when SOP's sometime go out the window, unfortunately). A bedside ABO slide type would have saved the patient in Texas that recently passed from an ABO HTR.