What is the significance of the Rh null phenotype in blood transfusion medicine?

A It is associated with a decreased risk of hemolysis
B It is characterized by a lack of Rh antigens on red blood cells ✓
C It is a rare condition with no clinical significance
D It is associated with an increased risk of alloimmunization

Explanation

The Rh null phenotype is a rare condition where an individual lacks all Rh antigens on their red blood cells, making it challenging to find compatible blood for transfusion.

Source

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