The hemolysis test is important in the blood bank when blood group “O” contains anti-A and anti-B antibodies which may be Hemolysin. Therefore hemolysis test procedure is the key test for hemolysis identification.
When such blood group has a high titer of such antibodies are transfused in a person having blood group A, or blood group B or blood group AB. It will cause hemolysis of receiver blood RBC.
Such an “O-positive” group is known as UNIVERSAL DANGEROUS DONOR. This blood must be used only for O-group.