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IMMUNOHEMATOLOGY (BLOOD BANK) EXAM QUESTIONS AND
CORRECT ANSWERS LATEST EDITION 2026
Immunohematology (Blood Bank) — Questions
Chapter 1: Blood Group Systems — ABO
1. What is the most important blood group system in transfusion medicine?
A) ABO
B) Rh
C) Kell
D) Duffy
Answer: A
Rationale: The ABO blood group system is the most important in transfusion medicine due to
the presence of naturally occurring antibodies and severe hemolytic transfusion reactions.
2. What antigens are present on type A red blood cells?
A) A antigen
B) B antigen
C) A and B antigens
D) Neither A nor B antigens
Answer: A
Rationale: Type A red blood cells have A antigens on their surface.
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3. What antigens are present on type B red blood cells?
A) B antigen
B) A antigen
C) A and B antigens
D) Neither A nor B antigens
Answer: A
Rationale: Type B red blood cells have B antigens on their surface.
4. What antigens are present on type AB red blood cells?
A) A and B antigens
B) A antigen only
C) B antigen only
D) Neither A nor B antigens
Answer: A
Rationale: Type AB red blood cells have both A and B antigens.
5. What antigens are present on type O red blood cells?
A) Neither A nor B antigens
B) A antigen only
C) B antigen only
D) A and B antigens
Answer: A
Rationale: Type O red blood cells have neither A nor B antigens.
6. What antibodies are present in type A serum?
A) Anti-B
B) Anti-A
C) Anti-A and anti-B
D) Neither anti-A nor anti-B
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Answer: A
Rationale: Type A serum contains anti-B antibodies.
7. What antibodies are present in type B serum?
A) Anti-A
B) Anti-B
C) Anti-A and anti-B
D) Neither anti-A nor anti-B
Answer: A
Rationale: Type B serum contains anti-A antibodies.
8. What antibodies are present in type AB serum?
A) Neither anti-A nor anti-B
B) Anti-A only
C) Anti-B only
D) Anti-A and anti-B
Answer: A
Rationale: Type AB serum contains neither anti-A nor anti-B antibodies.
9. What antibodies are present in type O serum?
A) Anti-A and anti-B
B) Anti-A only
C) Anti-B only
D) Neither anti-A nor anti-B
Answer: A
Rationale: Type O serum contains both anti-A and anti-B antibodies.
10. What is the universal donor for red blood cells?
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A) Type O negative
B) Type AB positive
C) Type A positive
D) Type B negative
Answer: A
Rationale: Type O negative red blood cells are the universal donor because they lack A, B, and
Rh antigens.
11. What is the universal recipient for red blood cells?
A) Type AB positive
B) Type O negative
C) Type A positive
D) Type B negative
Answer: A
Rationale: Type AB positive individuals are universal recipients because they have no antibodies
against A, B, or Rh antigens.
12. What is the universal donor for plasma?
A) Type AB
B) Type O
C) Type A
D) Type B
Answer: A
Rationale: Type AB plasma is the universal donor because it lacks anti-A and anti-B antibodies.
13. What is the universal recipient for plasma?
A) Type O
B) Type AB
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IMMUNOHEMATOLOGY (BLOOD BANK) EXAM QUESTIONS AND
CORRECT ANSWERS LATEST EDITION 2026
Immunohematology (Blood Bank) — Questions
Chapter 1: Blood Group Systems — ABO
1. What is the most important blood group system in transfusion medicine?
A) ABO
B) Rh
C) Kell
D) Duffy
Answer: A
Rationale: The ABO blood group system is the most important in transfusion medicine due to
the presence of naturally occurring antibodies and severe hemolytic transfusion reactions.
2. What antigens are present on type A red blood cells?
A) A antigen
B) B antigen
C) A and B antigens
D) Neither A nor B antigens
Answer: A
Rationale: Type A red blood cells have A antigens on their surface.
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3. What antigens are present on type B red blood cells?
A) B antigen
B) A antigen
C) A and B antigens
D) Neither A nor B antigens
Answer: A
Rationale: Type B red blood cells have B antigens on their surface.
4. What antigens are present on type AB red blood cells?
A) A and B antigens
B) A antigen only
C) B antigen only
D) Neither A nor B antigens
Answer: A
Rationale: Type AB red blood cells have both A and B antigens.
5. What antigens are present on type O red blood cells?
A) Neither A nor B antigens
B) A antigen only
C) B antigen only
D) A and B antigens
Answer: A
Rationale: Type O red blood cells have neither A nor B antigens.
6. What antibodies are present in type A serum?
A) Anti-B
B) Anti-A
C) Anti-A and anti-B
D) Neither anti-A nor anti-B
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Answer: A
Rationale: Type A serum contains anti-B antibodies.
7. What antibodies are present in type B serum?
A) Anti-A
B) Anti-B
C) Anti-A and anti-B
D) Neither anti-A nor anti-B
Answer: A
Rationale: Type B serum contains anti-A antibodies.
8. What antibodies are present in type AB serum?
A) Neither anti-A nor anti-B
B) Anti-A only
C) Anti-B only
D) Anti-A and anti-B
Answer: A
Rationale: Type AB serum contains neither anti-A nor anti-B antibodies.
9. What antibodies are present in type O serum?
A) Anti-A and anti-B
B) Anti-A only
C) Anti-B only
D) Neither anti-A nor anti-B
Answer: A
Rationale: Type O serum contains both anti-A and anti-B antibodies.
10. What is the universal donor for red blood cells?
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A) Type O negative
B) Type AB positive
C) Type A positive
D) Type B negative
Answer: A
Rationale: Type O negative red blood cells are the universal donor because they lack A, B, and
Rh antigens.
11. What is the universal recipient for red blood cells?
A) Type AB positive
B) Type O negative
C) Type A positive
D) Type B negative
Answer: A
Rationale: Type AB positive individuals are universal recipients because they have no antibodies
against A, B, or Rh antigens.
12. What is the universal donor for plasma?
A) Type AB
B) Type O
C) Type A
D) Type B
Answer: A
Rationale: Type AB plasma is the universal donor because it lacks anti-A and anti-B antibodies.
13. What is the universal recipient for plasma?
A) Type O
B) Type AB
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