If powerful cold autoantibodies are suspected, blood samples for investigation of
AIHA should be kept at:
5. Red blood cells are tested first with ______ antiglobulin reagent and then with
______ antiglobulin serum for the serologic investigation of AIHA.
a. Cold; warm.
b. Active; inactive.
d. Monospecific; broad-spectrum.
6. What are the autoantibodies directed against in most cases of the warm antibody
a. ABO antigens.
b. Ii antigens.
d. Rh complex.
7. Why is it important not to expose the patient to Rh antigens, especially D, when
testing for specificity of the autoantibody?
a. WAIHA are complex.
b. Their own cells lack that antigen.
Often there are low serum complement levels.
d. There are difficulties in autoagglutination groups.