What is the role of the Kell blood group system in transfusion medicine?

A It determines the ABO blood group
B It is responsible for hemolytic disease of the newborn
C It is a high-frequency antigen that can cause severe hemolytic reactions ✓
D It is used to identify individuals with a rare blood type

Explanation

The Kell blood group system is a complex system with multiple antigens, and it is known for its high-frequency antigen K1, which can cause severe hemolytic reactions if an individual with K1-negative blood receives K1-positive blood.

Source

American Association of Blood Banks
Hematology Hematology: Blood Grouping and Crossmatching Hematology: Blood Grouping and Crossmatching Hard MEDICAL Confidence: high