Blood is needed in various situations like accidents, excessive bleeding, anaemia, thalassemia, and other surgical operations. Blood is collected from the donor and is transfused to the body of the recipient who is in need. When not needed, the blood can be stored for days and can be used after some time.
So, by donating blood it saves the life of a needful person. The donated blood after proper matching procedures is transferred into the body of the patient. In this way, a person’s life is saved by blood transfusion.