What is the name of the test used to detect the presence of IgG antibodies against red blood cell antigens in a patient's serum?

A Direct Coombs test
B Indirect 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 IgG antibodies against red blood cell antigens in a patient's serum.

Source

Clinical Laboratory Medicine
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Easy MEDICAL Confidence: high