Seems that pre admission test needs more blood because 1. My Dad’s blood has antibodies 2. They don’t know what are these antibodies 3. Need to figure out where to get compatible blood in case Dad needs transfusion during TAVR now there is confusion as to where my Dad has to go to get this done and it makes it so much complicated and tense! And I am scared what if they cannot get compatible blood type to whatever these antibodies are Does anyone have experience with this “type and screen” testing before surgery?