UWorld:
AMBOSS:
Neither source lists type II but the last bullet pount in the AMBOSS image sounds pretty type II to me. Thoughts? @AnKing-Maintainers
For what it’s worth this is what I got from open evidence which matches the clarification in the extra field.
“Febrile nonhemolytic transfusion reactions result from two distinct mechanisms: recipient antileukocyte antibodies (against donor HLA and white blood cells) causing Type II hypersensitivity reactions, or pro-inflammatory cytokines that accumulate in blood products during storage. The antibody-mediated mechanism predominates in red blood cell transfusions, while cytokine-mediated reactions are the primary cause of most platelet transfusion reactions.”
Without a proper rationale or source from OP, I’d reject