6. A unit of red blood cells is signed out of the transfusion service at 9:00 am, to be given to an oncology patient who has come in to the facility for an outpatient transfusion. At 9:45 am, the nurse responsible for the transfusion calls to report that before she could spike the unit, the patient's initial IV failed, and that the staff are having a very hard time re-establishing access. The nurse, who happens to be a regular blood donor, does not want the unit to go to waste, so she asks your help. She states that the unit still feels cool to the touch. Which of the following is your advice about this unit?