What is the significance of the 'minor crossmatch' in the context of blood transfusion?

A To detect ABO incompatibility
B To detect antibodies against non-ABO antigens ✓
C To confirm the identity of the blood unit
D To determine the hematocrit of the donor blood

Explanation

The minor crossmatch, also known as the indirect antiglobulin test, is used to detect antibodies against non-ABO antigens in the recipient's serum, which can cause a hemolytic transfusion reaction.

Source

Medical Laboratory Technology textbook
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Medium MEDICAL Confidence: high