Blood Type Compatibility

Recipient blood type	Donor blood type must be
AB+	Any human blood type
AB-	O-	A-	B-	AB-
A+	O-	O+	A-	A+
A-	O-	A-
B+	O-	O+	B-	B+
B-	O-	B-
O+	O-	O+
O-	O-

Conclusion of blood type compatibility

1. AB+ blood type is a selfish type! Recipient of AB+ blood type can receive any blood type donation (must be human blood type, of course!), but itself cannot donate to any blood type except own self!
   
   Blood group AB individual has both A & B antigen on the surface of red blood cell, and his blood serum does not contain any antibodies against either A or B antigen. Hence, an individual with type AB blood can receive blood from any group (AB being preferable), but can only donate blood to another group AB individual.


2. Blood group A individual has the A antigen on the surface of red blood cell, and his blood serum containing IgM antibodies against the B antigen. Therefore, a group A individual can only receive blood from individual of group A or O (A being preferable), and can donate blood to individuals of group A or AB.


3. Blood group B individual has the B antigen on the surface of red blood cell, and blood serum containing IgM antibodies against the A antigen. Thus, a group B individual can only receive blood from individuals of groups B or O (B being preferable), and can donate blood to individual of group B or AB.


4. O- individual is great donor! Individual of O- blood type can donate to any blood type! But O- individuals himself is high risk group! They can only receive blood of O- only!
   
   O+ is slightly less vulnerability than O- individual, considered as second high risk group. Individuals of A- and B- blood type are in this group as well.
   
   Blood group O individual does not has either A or B antigen on the surface of red blood cell, but their blood serum contains IgM antibodies against both A and B antigen. So, a group O individual can only receive blood from a group O individual, but they can donate blood to individuals of any AB, A, B, or O blood group.