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A person with unknown blood group under ABO system, has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend who has a valid certificate of his own blood type, offers for blood donation without delay. What would have been the type of blood group of the donor friend?

  1. A
    Type A
  2. B
    Type B
  3. C
    Type AB
  4. D
    Type O

Solution & Step-by-step Explanation

Blood group O is the universal donor because its RBCs lack both Antigen A and Antigen B on their surface. Therefore, it can be safely transfused into a person of any ABO blood group in an emergency.

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A person with unknown blood group under ABO system, has suffered much blood loss in an accident and needs immediate blood transfusion. His one friend who has a valid certificate of his own blood type, offers for blood donation without delay. What would have been the type of blood group of the donor friend?
A
Type A
B
Type B
C
Type AB
D
Type O

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Body FluidsBlood Groups

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