What is the name of the test used to detect the presence of alloantibodies in a patient's serum?

A Indirect Coombs test ✓
B Direct Coombs test
C Antiglobulin test
D Crossmatch test

Explanation

The indirect Coombs test is used to detect the presence of alloantibodies in a patient's serum, which can help identify potential transfusion reactions.

Source

American Association of Blood Banks (AABB) guidelines
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Easy MEDICAL Confidence: high