Donating blood to non-Muslims
Question

                Is it permissible for me to donate blood to a sick person who is about to die and is not a Muslim?.
Praise be to Allah.
      I do not know of any reason why one cannot do that, because 
      Allah, may He be glorified and exalted, says in His Holy Book 
      (interpretation of the meaning):

    “Allaah does not forbid you to deal justly and kindly with 
    those who fought not against you on account of religion nor drove you out of 
    your homes. Verily, Allaah loves those who deal with equity”

    [al-Mumtahinah 60:8]. 

    So Allah is telling us that with regard to those disbelievers 
    who do not fight us or drive us out of our homes, He does not forbid us to 
    be kind to them, treat them nicely and help the one who is in urgent need of 
    help. The mother of Asma’ bint Abi Bakr (may Allah be pleased with her) came 
    when she was still a disbeliever to her daughter in Madeenah, at the time of 
    the truce between the Prophet (blessings and peace of Allah be upon him) and 
    the people of Makkah, to ask her to uphold ties of kinship. Asma’ consulted 
    the Prophet (blessings and peace of Allah be upon him) about that and he 
    told her to uphold ties of kinship with her, and said: “Uphold ties of 
    kinship with your mother” when she was still a disbeliever. 

    So if a non-Muslim who is living under Muslim rule or a 
    non-Muslim who is on peaceful terms with us, with no war between him and us, 
    is in need of that, there is nothing wrong with giving blood to him as an 
    act of charity, and you will be rewarded for that, because there is nothing 
    wrong with giving aid to one who is in need of charity. End quote. 

    Shaykh ‘Abd al-‘Azeez ibn Baaz (may Allah have mercy on him).