AEMCA Practice Exam

Which blood group is considered the universal recipient?

1. O+

2. AB+

3. A-

4. B+

The correct answer is: AB+

AB+ is considered the universal recipient blood group because individuals with this blood type can receive blood from all other blood groups without experiencing an adverse reaction. This is due to the presence of both A and B antigens on the surface of their red blood cells, as well as the absence of anti-A and anti-B antibodies in their plasma. Consequently, they do not have an immune response against A or B blood types, enabling them to accept donations from any of the other four major blood types: A, B, AB, and O. The reasoning behind blood transfusions hinges on the compatibility of these antigens and antibodies. If a person receives blood that contains antigens not present in their own blood type, it can lead to a dangerous immune response. However, AB+ individuals do not have these antibodies, making them versatile recipients in transfusion situations. This characteristic is particularly crucial in medical emergencies where finding a compatible blood type quickly can save lives.