This is really interesting. We personally crossmatch (commercial kit) before all feline transfusions but do keep a small stock of pRBCs (2-3 units) so we aren’t as limited as we once were. We did have one case a few months ago which was incompatible with every unit we had (in the end we did an external crossmatch at the blood bank, and he was actually only compatible with 1 unit there) despite being the first transfusion, and all units type matched. Thankfully he began regenerating and didn’t require transfusion in the end.
