Testing the Red Cells With Known Antisera from Introduction to the ABO Blood Group System, presented by MediaLab

ABO Typing

Testing the Red Cells With Known Antisera

Patient Red Cells Tested With Known Antisera			ABO Antigens Present on Red Cell
Anti-A	Anti-B	Anti-A,B	ABO Antigens Present on Red Cell
4+	0	4+	A
0	4+	4+	B
0	0	0	Neither A nor B
4+	4+	4+	A and B

+ = agglutination (graded 1+ to 4+)
0 = no agglutination or hemolysis

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