Table 5: Testing the Red Cells with Known Antisera

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The page below is a sample from the LabCE course Introduction to the ABO Blood Group System. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Table 5: Testing the Red Cells with Known Antisera

Patient Red Cells Tested with Known AntiseraABO Antigens Present on Red Cell
Anti-AAnti-BAnti-A,B
3–4+
0
3–4+
A
0
3–4+
3–4+
B
0
0
0
Neither A nor B
3–4+
3–4+
3–4+
A and B
+ = agglutination (graded 1+ to 4+); 0 = no agglutination or hemolysis