What is the primary purpose of using a 'minor crossmatch' in blood transfusion?

A To detect ABO incompatibility
B To detect antibodies against non-ABO antigens
C To detect Rh incompatibility
D To detect bacterial contamination of blood products
A minor crossmatch is used to detect antibodies against non-ABO antigens, which can cause a transfusion reaction.
Medical Laboratory Technology textbook
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Medium MEDICAL Confidence: high