Rh
Control
Type of control:
Required when anti-D
antisera has macromolecules in a high-protein
diluent to enhance agglutination.
It is a negative (no reaction) control
Contains everything that is
in anti-D antisera except anti-D
When is it required to be performed:
What is contained in Rh control:
What can cause agglutination of the Rh
control:
1. Patients
RBCs coated with autoantibodies which can be
detected by performing DAT and it being positive
2. Plasma
of patient contains high protein concentration which
causes rouleaux. Can be detected by using saline
replacement technique.