Which of the following laboratory tests is used to detect the presence of alloantibodies against high-frequency antigens in a patient's serum?

A Indirect Coombs test ✓
B Direct Coombs test
C Antiglobulin test
D Enzyme-linked immunosorbent assay (ELISA)

Explanation

The indirect Coombs test, also known as the indirect antiglobulin test, is used to detect the presence of alloantibodies against high-frequency antigens in a patient's serum, which is essential for identifying potential transfusion-related complications.

Source

Transfusion Medicine journal
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Medium MEDICAL Confidence: high