Why is it sometimes necessary to distinguish A₁ and A₂ blood types?
A) To resolve a discrepancy between the forward and reverse typing
B) To prevent A1 recipients from receiving A2 blood
C) To determine the secretor status of group A individuals
D) To prevent hemolytic disease of the newborn

Question

Quizplus · Accepted Answer

Routine testing with anti-A₁ lectin is necessary to resolve a discrepancy between the forward and reverse typing.Individuals who possess the A₂ antigen can make anti-A₁ antibody.

Why Is It Sometimes Necessary to Distinguish A₁ and A₂