An Antibody Screen on a Patient with a Prior History

Multiple Choice

An antibody screen on a patient with a prior history of transfusion was negative.The crossmatch was incompatible with 1 unit selected at AHG phase.The next step in the investigation would be to:

A) perform a prewarm procedure for crossmatching
B) perform a direct antiglobulin test on the incompatible unit.
C) redraw the patient and begin a new crossmatch.
D) crossmatch a new unit and discard the incompatible unit.