...You owe your existence in this world to the love of your parents. Hence, whenever there is a need for blood donation, you should come forward to donate your blood. Thereby fulfil your obligation to your parents and society.

Sri Sathya Sai Speaks, Vol 37 (2004) 

Sri Sathya Sai Organization volunteers respond to the innate call to address shortages in the blood supply. They conduct and participate in blood drives which are conducted by different centers and regions.