MCQ Detailed View

Blood transfusion is a life-saving medical procedure in which blood or blood components are transferred from a donor to a patient. However, not all blood types are compatible. The ABO blood group system classifies human blood based on the presence or absence of antigens (A and B) on the surface of red blood cells and antibodies in the plasma. Compatibility is crucial to avoid harmful reactions during transfusions.

A person with AB+ blood group is known as the universal recipient. This means they can receive blood from all other blood groups (A, B, AB, and O) without causing dangerous immune reactions. The reason for this is:

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  Individuals with AB blood type have both A and B antigens on their red blood cells.

  
  


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  They do not have anti-A or anti-B antibodies in their plasma, so their immune system does not attack transfused blood from other groups.

  
  


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  The positive (+) sign indicates the presence of the Rh factor, allowing them to receive Rh-positive and Rh-negative blood safely.

  
  

Let’s review the given options:

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  A+: Can only receive A and O types, not universal.

  
  


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  B+: Can only receive B and O types.

  
  


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  AB+: Can receive all groups, making it the universal recipient.

  
  


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  O+: Known as the universal donor, meaning their blood can be given to most others, but they can only receive from O.

  
  

Although AB+ individuals can safely receive blood from any type, their plasma contains both antibodies after donation, meaning they cannot universally donate blood to others. This concept is essential in medicine, biology, and transfusion science.

Thus, the correct answer is AB+, making Option 3 the right choice for the universal recipient blood group.