Final answer:
Alloadsorption would be performed in cases of hemolytic anemia with multiple antibodies in serum, hemolytic transfusion reaction, and HDFN.
Step-by-step explanation:
An alloadsorption would be performed in the following circumstance:
- Multiple antibodies in serum: This would require the removal of multiple antibodies from the serum of a patient with hemolytic anemia.
- Hemolytic transfusion reaction: Alloadsorption would be performed if a patient experienced a hemolytic transfusion reaction, where antibodies in the patient's serum are causing destruction of the transfused red blood cells.
- HDFN (Hemolytic disease of the fetus and newborn): Alloadsorption may be performed to remove maternal antibodies from the newborn's circulation, which are causing destruction of the baby's red blood cells.