Table 6. Testing Patient Serum With Known Reagent Red Cells (Reverse Grouping).Patient Serum Tested With Known Reagent Red Cells | Antibodies Present in Serum |
0 | 3-4+ | Anti-B |
3-4+ | 0 | Anti-A |
3-4+ | 3-4+ | Anti-A and Anti-B |
0 | 0 | No ABO antibodies present |
+ = agglutination (graded 1+ to 4+)
0 = no agglutination or hemolysis