How you prepare

Your blood will be tested before a transfusion to determine whether your blood type is A, B, AB or O and whether your blood is Rh positive or Rh negative. The donated blood used for your transfusion must be compatible with your blood type.

Tell your health care provider if you've had a reaction to a blood transfusion in the past.

Aug. 01, 2017
  1. What is a blood transfusion? National Heart, Lung, and Blood Institute. Accessed Feb. 7, 2017.
  2. The process. American Red Cross. Accessed Feb. 7, 2017.
  3. Getting a blood transfusion. American Cancer Society. Accessed Feb. 7, 2017.
  4. Blood safety basics. Centers for Disease Control and Prevention. Accessed Feb. 7, 2017.