“…1,2 EtO is widely used to sterilize heat labile plastics, including intravenous tubing and commercial apheresis kits used for apheresis, photopheresis, and blood component collection. 2 Allergic reactions to EtO, including anaphylaxis and death, have been reported in patients undergoing dialysis, [3][4][5][6][7][8][9][10][11] plateletpheresis, 12,13 plasmapheresis, 14 photopheresis, 15 cardiac bypass, 16 EtO-sterilized cardiac stents, 17 and blood transfusion through EtO-sterilized leukofiltration filters. 18 Because such allergic reactions are relatively rare, they can go unrecognized due to lack of awareness and knowledge.…”