Which of the following tests is used to detect the presence of alloantibodies against high-frequency antigens, such as those found in the Kell or Duffy blood group systems?

A Indirect antiglobulin test ✓
B Direct antiglobulin test
C Enzyme-linked immunosorbent assay
D Flow cytometry

Explanation

The indirect antiglobulin test is used to detect alloantibodies against high-frequency antigens, which can cause hemolysis in transfusion recipients.

Source

Technical Manual of the American Association of Blood Banks
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Medium MEDICAL Confidence: high