How many ml do you have to run the saline before blood transfusion?

Typically, 0.9% Normal Saline is used to prime the blood transfusion tubing before administering the blood to a patient. Different blood banks may have slightly different protocols, but the volume used during priming is usually between 100-200 mL. This amount of saline helps ensure the integrity and patency of the transfusion line, verifies that the blood flows freely through the tubing, and flushes out any potential air bubbles present.