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Blood Type Compatibility


The importance of properly matched blood types is a critical when patients require blood. There are eight different common blood types, which are determined by the presence or absence of antigens A and B on the surface of the red blood cell. 


Download a printable copy of the Blood Type Compatibility resource

This resource accompanies our Transfusion Therapy in the Adult Patient continuing education course.





 
Blood Type Compatibility 
  • Group A – has only the A antigen on red cells (and B antibody in the plasma). Group A can donate red blood cells to A’s and AB’s
  • Group B – has only the B antigen on red cells (and A antibody in the plasma). Group B can donate red blood cells to B’s and AB’s.
  • Group AB – has both A and B antigens on red cells (but neither A nor B antibody in the plasma). Group AB can donate red blood cells to other AB’s, but can receive from all others. Group AB is the universal plasma donor.
  • Group O – has neither A nor B antigens on red cells (but both A and B antibody are in the plasma). Group O can donate red blood cells to anybody. It is the universal red cell donor.
  O- O+ B- B+ A- A+ AB- AB+
AB+
AB-      
 
A+        
A-          
 
B+        
B-          
 
O+            
O-            
 

 
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