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+	X	X	X	X	X	X	X	X
AB-	X		X		X		X
A+	X	X			X	X
A-	X				X
B+	X	X	X	X
B-	X		X
O+	X	X
O-	X