Immunology

Question 1

What is the usual nature of plasma antibodies in blood group A individuals?
a. IgM
b. IgG
c. IgA
d. IgD

Answer 1

a. IgM

Question 1

A person is grouped as blood type A on fonward typing. However, upon reverse typing, there is agglutination using type A and type B red cells. What can be the explanation for this?
A. There is clerical error.
B. The individual is correctly typed as Group O
C. Dolichos biflorus was used in typing
D. The individual has weak Anti-A1 antibodies

Answer 1

D. The individual has weak Anti-A1 antibodies

Question 2

The following are indications for the use of cryoprecipitate EXCEPT.
A. Prothrombin deficiency
B. Factor 8 deficiency
C. Factor 1 deficiency
D. von Wilebrand disease

Answer 2

A. Prothrombin deficiency

Question 3

How will Dolichos bifiorus differentiate the two subgroups of Blood type A individuals?
A. it will cause agglutination with A1 red cells but not. A2 red calls.
B. It will cause agglutination with A2 red calls but not A1 red calls.
C. it will cause hemolysis of A1 red calls and agglutination with A2 red cells.
D. It will cause hemolysis of A2 red calls and agglutination with A1 red calls.

Answer 3

A. it will cause agglutination with A1 red cells but not. A2 red calls.

Question 4

Which type of red celi component prevents graft us host disease that is related to blood transfusion?
A. Leukocyte-poor red calls
B. Washed red cells
C. Irradiated red cells
D. Red cells in additive solution

Answer 4

C. Irradiated red cells

Question 5

Which of the following statements about the slide method of ABO blood grouping is NOT true?
A. It has the advantage of being easy to perform and requiring only simple equipment.
B. It is recommended as a routine test in blood banks.
C. Weakly reactive antigens on cells on forward grouping may be missed.
D. Results should always be confirmed by cell and serum grouping by tube method.

Answer 5

B. It is recommended as a routine test in blood banks.

Question 6

What antigen/s may be present on the red calls of blood type “B” individuals?
a. B and H
b. B and O
c. B
d. H

Answer 6

a. B and H

Question 7

What is the indication for using whole blood for transfusion?
Non-availability of red cell concentrate
A. Non-availability of red cell concentrate
B. Chronic severe anemia
C. Acute blood loss
D. Severe anemia with congestive heart failure

Answer 7

A. Non-availability of red cell concentrate

Question 8

Which of the following is a cause for permanent deferral of a blood donor?
A. Tattoo all over the body
B. History of blood transfusion
C. History of epilepsy
D. Iron deficiency anemia

Answer 8

C. History of epilepsy

Question 9

Which of the following blood components can be stored for 4-5 days at room temperature?
A. Whole blood
B. Packed red calls
C. Cryoprecipitate
D. Platelet concentrate

Answer 9

D. Platelet concentrate