AAB MT REVIEW PAPER 2026 COMPLETE
QUESTION SET ACCURATE ANSWERS
◉ What is the most common genotype that could result from the
following phenotype?
Anti-D,C Positive
Anti-E Negative
Anti-c,e Positive
Answer: R1r
◉ In which phenotype is there an absence of Rh antigens from the
red cell blood cell membrane?
Answer: Rh null
◉ Which statement is INCORRECT regarding naturally occurring
antibodies?
Answer: Cross the placenta
◉ These statements are true regarding naturally occurring
antibodies:
Answer: Usually IgM, react best in saline, react best at 4 degrees C
,◉ Which of the following antibodies is NOT naturally occurring?
Answer: Anti-K
◉ The following antibodies are naturally occurring:
Answer: anti-Le^a, anti-N, and anti-P1
◉ Which statement is INCORRECT regarding immune antibodies?
Answer: Most often found in the MNSs system
◉ The following statements regarding immune antibodies are
correct:
Answer: Mainly IgG, can cross placenta, react best with antiglobulin
◉ What is the estimated percentage of patients immunized to the
blood group antigens?
Answer: 1%-4%
◉ Which other antigen belongs to the MNSs blood group system?
Answer: U
◉ Anti-N sometimes shows dosage effect. Which cells will it react
with most strongly if showing this effect?
, Answer: NN
◉ Which antigen is found in plasma and adsorbed onto the red
blood cells?
Answer: Le^a
◉ Paroxysmal cold hemoglobinuria (PCH) is often associated with
which antibody?
Answer: anti-P
◉ The antigen Tj^a is a part of which blood group system?
Answer: P
◉ An individual inherits the following genes: Lele Sese Hh AB. What
soluble antigens will be secreted in the patient's saliva?
Answer: H, A, B, Le^a, Le^b
◉ Which one of the following is NOT true of anti-Le^a?
Answer: Causes hemolytic disease of the newborn (HDN)
◉ The following are true of anti-Le^a:
Answer: Occurs in Le (a-b-) individuals, is composed mostly of IgM,
and is neutralized by Lewis substance
QUESTION SET ACCURATE ANSWERS
◉ What is the most common genotype that could result from the
following phenotype?
Anti-D,C Positive
Anti-E Negative
Anti-c,e Positive
Answer: R1r
◉ In which phenotype is there an absence of Rh antigens from the
red cell blood cell membrane?
Answer: Rh null
◉ Which statement is INCORRECT regarding naturally occurring
antibodies?
Answer: Cross the placenta
◉ These statements are true regarding naturally occurring
antibodies:
Answer: Usually IgM, react best in saline, react best at 4 degrees C
,◉ Which of the following antibodies is NOT naturally occurring?
Answer: Anti-K
◉ The following antibodies are naturally occurring:
Answer: anti-Le^a, anti-N, and anti-P1
◉ Which statement is INCORRECT regarding immune antibodies?
Answer: Most often found in the MNSs system
◉ The following statements regarding immune antibodies are
correct:
Answer: Mainly IgG, can cross placenta, react best with antiglobulin
◉ What is the estimated percentage of patients immunized to the
blood group antigens?
Answer: 1%-4%
◉ Which other antigen belongs to the MNSs blood group system?
Answer: U
◉ Anti-N sometimes shows dosage effect. Which cells will it react
with most strongly if showing this effect?
, Answer: NN
◉ Which antigen is found in plasma and adsorbed onto the red
blood cells?
Answer: Le^a
◉ Paroxysmal cold hemoglobinuria (PCH) is often associated with
which antibody?
Answer: anti-P
◉ The antigen Tj^a is a part of which blood group system?
Answer: P
◉ An individual inherits the following genes: Lele Sese Hh AB. What
soluble antigens will be secreted in the patient's saliva?
Answer: H, A, B, Le^a, Le^b
◉ Which one of the following is NOT true of anti-Le^a?
Answer: Causes hemolytic disease of the newborn (HDN)
◉ The following are true of anti-Le^a:
Answer: Occurs in Le (a-b-) individuals, is composed mostly of IgM,
and is neutralized by Lewis substance
