What is the purpose of alloabsorption?

Master the CAMLPR Transfusion Test with interactive questions and detailed explanations. Boost your knowledge and ensure you're exam-ready with comprehensive study resources!

Multiple Choice

What is the purpose of alloabsorption?

Alloabsorption removes specific antibodies from a patient’s serum by exposing it to donor red cells that carry the antigens those antibodies target. The antibodies bind to those antigens on the red cells and are removed from the serum, which helps unmask any additional antibodies that may be present and otherwise be hidden by the dominant one. This is why donor red cells are used and the goal is to identify an alternative antibody. Using autologous plasma wouldn’t bring in the needed antigens, testing against a panel is a screening step rather than absorption, and donor white cells don’t provide the antigen targets in the same way red cells do.

Alloabsorption removes specific antibodies from a patient’s serum by exposing it to donor red cells that carry the antigens those antibodies target. The antibodies bind to those antigens on the red cells and are removed from the serum, which helps unmask any additional antibodies that may be present and otherwise be hidden by the dominant one. This is why donor red cells are used and the goal is to identify an alternative antibody. Using autologous plasma wouldn’t bring in the needed antigens, testing against a panel is a screening step rather than absorption, and donor white cells don’t provide the antigen targets in the same way red cells do.

More practice questions