What Is the Next Step in the Investigation of a Positive

Multiple Choice

What is the next step in the investigation of a positive direct antiglobulin test with polyspecific antihuman globulin reagent?

A) Repeat the direct antiglobulin test using warm saline.
B) Perform an eluate.
C) Add IgG-sensitized red cells to verify positive reaction.
D) Repeat the direct antiglobulin test using monospecific anti-IgG and anti-C3 reagents.