It is my philosophy to never (unless emergent situation) administer IV antibiotics simultaneously during a blood transfusion, even though a different PIV site or lumen of a multilumen CVC. This has been based on the high risk of a reaction from either the blood product or the antibiotic and if infusing simultaneously, not knowing which the patient is reacting to. I have searched the INS Standards, INS P&P resource, Infusion Therapy in Clinical Practice, INS Core Corriculum, etc.... thinking I would have sound backing for this. Not the case. Is this just best practice or am I in the minority?