RBC should be transfused:

Ans: C(Ref: WHO Clinical Transfusion Guidelines/p22).RBCs should he transfused with 18-20 G needle within 4 hours of issue from the blood bank.Sta infusion within 30 min of removing pack from refrigerator and complete the infusion within 4 hours.An 18-gauge needle is standard, but a needle or catheter as small as 23-gauge can be used for transfusion if necessary within 4 hours of issue from the blood bank.