Question

A patient who received an autologous transfusion one week ago cannot be reliably antigen typed

Answer 1

The statement above is TRUE.
For patients, who recently received an autologous transfusion, they can not be reliably antigen typed. This is because, mixed field reaction typically occur when the phenotyping process in underway. The donor cells usually react as expected with the typing serum but the patients' autologous cells do not react with the typing serum.