Blood Storage Refrigerator Jehovah's Witnesses Do You Allow Dialysis? But Not Storage Of Blood For Surgery That Is Your Own? Do You Allow?

Jehovah's Witnesses do you allow dialysis? But not storage of blood for surgery that is your own? Do you allow? - blood storage refrigerator

Blood will be drawn using (own) during the operation in his own body again, if it directly (not stored) again?

Thank you!