Question 1

Which ABO phenotype selection contains the most H antigen and the least H antigen,respectively,on the red cell's surface?

Accepted Answer

A) O,A1B 
B) A2,A1B 
C) B,A 
D) A1B,O 
A) O,A1B 
B) A2,A1B 
C) B,A 
D) A1B,O A

Question 2

Match the immunodominant sugar that corresponds to the ABO system group or antigen.
-Group B

Accepted Answer

A) D-galactose 
B) L-fucose 
C) N-acetylgalactosamine 
D) None of the above 
A) D-galactose 
B) L-fucose 
C) N-acetylgalactosamine 
D) None of the above A

Question 3

A recipient with group A phenotype requires a transfusion of 2 units of frozen plasma.Which of the following types are appropriate to select for transfusion?

Accepted Answer

A) AB and B 
B) B and A 
C) O and A 
D) AB and A 
A) AB and B 
B) B and A 
C) O and A 
D) AB and A D

Question 4

What ABO phenotype would agglutinate in the presence of anti-A,B produced by group O individuals?

Accepted Answer

A) A only 
B) B only 
C) A and B 
D) O only 
A) A only 
B) B only 
C) A and B 
D) O only

Question 5

Match the immunodominant sugar that corresponds to the ABO system group or antigen.
-Bombay

Accepted Answer

A) D-galactose 
B) L-fucose 
C) N-acetylgalactosamine 
D) None of the above 
A) D-galactose 
B) L-fucose 
C) N-acetylgalactosamine 
D) None of the above

Question 6

A patient's red cells are agglutinated by anti-B,but not by anti-A.This person would have which of the following ABO phenotypes?

Accepted Answer

A) Group B 
B) Group O 
C) Group AB 
D) Group A 
A) Group B 
B) Group O 
C) Group AB 
D) Group A

Question 7

According to Landsteiner's rule,what ABO antibody will be detected in a group A individual's serum?

Accepted Answer

A) Anti-A 
B) Anti-B 
C) Anti-A,B 
D) None 
A) Anti-A 
B) Anti-B 
C) Anti-A,B 
D) None

Question 8

Match the immunodominant sugar that corresponds to the ABO system group or antigen.
-H antigen

Accepted Answer

A) D-galactose 
B) L-fucose 
C) N-acetylgalactosamine 
D) None of the above 
A) D-galactose 
B) L-fucose 
C) N-acetylgalactosamine 
D) None of the above

Question 9

Which of the following situations is most likely to cause intravascular hemolysis when an incompatible transfusion is given?

Accepted Answer

A) Group B packed cells to a group O recipient 
B) Group A packed red cells to a group AB recipient 
C) Group AB plasma to a group A recipient 
D) Group AB plasma to a group O recipient 
A) Group B packed cells to a group O recipient 
B) Group A packed red cells to a group AB recipient 
C) Group AB plasma to a group A recipient 
D) Group AB plasma to a group O recipient

Question 10

Most "naturally occurring" ABO system antibodies fall into which class?

Accepted Answer

A) IgA 
B) IgM 
C) IgE 
D) IgG 
A) IgA 
B) IgM 
C) IgE 
D) IgG

Question 11

What would be the agglutination reaction of red cells from a Bombay phenotype with anti-H lectin?

Accepted Answer

A) Strong 4+ 
B) Mixed field 
C) Weak 1+ 
D) Negative 
A) Strong 4+ 
B) Mixed field 
C) Weak 1+ 
D) Negative

Question 12

What percentage of the group A population are type A2?

Accepted Answer

A) 1% 
B) 10% 
C) 20% 
D) 35% 
A) 1% 
B) 10% 
C) 20% 
D) 35%

Question 13

Match the immunodominant sugar that corresponds to the ABO system group or antigen.
-Group A

Accepted Answer

A) D-galactose 
B) L-fucose 
C) N-acetylgalactosamine 
D) None of the above 
A) D-galactose 
B) L-fucose 
C) N-acetylgalactosamine 
D) None of the above

Question 14

Why is it sometimes necessary to distinguish A1 and A2 blood types?

Accepted Answer

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 
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 15

Approximately what is the percentage of individuals who demonstrate H in their saliva?

Accepted Answer

A) 15% 
B) 50% 
C) 80% 
D) 98% 
A) 15% 
B) 50% 
C) 80% 
D) 98%

Question 16

Match the immunodominant sugar that corresponds to the ABO system group or antigen.
-Group O

Accepted Answer

A) D-galactose 
B) L-fucose 
C) N-acetylgalactosamine 
D) None of the above 
A) D-galactose 
B) L-fucose 
C) N-acetylgalactosamine 
D) None of the above

Question 17

The subgroup of A with the least amount of A antigen is:

Accepted Answer

A) A3. 
B) Ax. 
C) A2. 
D) Ael. 
A) A3. 
B) Ax. 
C) A2. 
D) Ael.

Question 18

What substances are found in the saliva of a group A person who also inherited the secretor gene?

Accepted Answer

A) A,H 
B) H 
C) A,Se 
D) A,B,H 
A) A,H 
B) H 
C) A,Se 
D) A,B,H

Question 19

Select the appropriate strategy if the results of red cell and serum testing in the ABO typing procedure have negative agglutination reactions.

Accepted Answer

A) Wash patient cells with warm saline. 
B) Use polyclonal typing reagents. 
C) Perform an autocontrol. 
D) Incubate tubes at room temperature or 4° C with an autocontrol. 
A) Wash patient cells with warm saline. 
B) Use polyclonal typing reagents. 
C) Perform an autocontrol. 
D) Incubate tubes at room temperature or 4° C with an autocontrol.

Question 20

A blood sample from a 90-year-old man was submitted to the blood bank for a type and screen before surgery.The forward type demonstrates as a group A,whereas the reverse type appears to be group AB.The most likely cause of the discrepancy is:

Accepted Answer

A) contaminated reagent antisera. 
B) rouleaux formation. 
C) that the patient has autoantibodies. 
D) that patient has low-titer isoagglutinins. 
A) contaminated reagent antisera. 
B) rouleaux formation. 
C) that the patient has autoantibodies. 
D) that patient has low-titer isoagglutinins.

Which ABO phenotype selection contains the most H antigen and the least H antigen,respectively,on the red cell's surface?

Match the immunodominant sugar that corresponds to the ABO system group or antigen. -Group B

A recipient with group A phenotype requires a transfusion of 2 units of frozen plasma.Which of the following types are appropriate to select for transfusion?

What ABO phenotype would agglutinate in the presence of anti-A,B produced by group O individuals?

Match the immunodominant sugar that corresponds to the ABO system group or antigen. -Bombay

A patient's red cells are agglutinated by anti-B,but not by anti-A.This person would have which of the following ABO phenotypes?

According to Landsteiner's rule,what ABO antibody will be detected in a group A individual's serum?

Match the immunodominant sugar that corresponds to the ABO system group or antigen. -H antigen

Which of the following situations is most likely to cause intravascular hemolysis when an incompatible transfusion is given?

Most "naturally occurring" ABO system antibodies fall into which class?

What would be the agglutination reaction of red cells from a Bombay phenotype with anti-H lectin?

What percentage of the group A population are type A₂?

Match the immunodominant sugar that corresponds to the ABO system group or antigen. -Group A

Why is it sometimes necessary to distinguish A₁ and A₂ blood types?

Approximately what is the percentage of individuals who demonstrate H in their saliva?

Match the immunodominant sugar that corresponds to the ABO system group or antigen. -Group O

The subgroup of A with the least amount of A antigen is:

What substances are found in the saliva of a group A person who also inherited the secretor gene?

Select the appropriate strategy if the results of red cell and serum testing in the ABO typing procedure have negative agglutination reactions.

A blood sample from a 90-year-old man was submitted to the blood bank for a type and screen before surgery.The forward type demonstrates as a group A,whereas the reverse type appears to be group AB.The most likely cause of the discrepancy is:

Immunology: Basic Principles and Applications in the Blood Bank

Blood Banking Reagents: Overview and Applications

Genetic Principles in Blood Banking

Rh Blood Group System

Other Blood Group Systems

Antibody Detection and Identification

Compatibility Testing

Blood Bank Automation for Transfusion Services

Adverse Complications of Transfusions

Hemolytic Disease of the Fetus and Newborn

Donor Selection and Phlebotomy

Testing of Donor Blood

Blood Component Preparation and Therapy

Transfusion Therapy in Selected Patients

Quality Assurance and Regulation of the Blood Industry and Safety Issues in the Blood Bank

Filters

Exam 4: Abo and H Blood Group Systems and Secretor Status

Which ABO phenotype selection contains the most H antigen and the least H antigen,respectively,on the red cell's surface?

Match the immunodominant sugar that corresponds to the ABO system group or antigen. -Group B

A recipient with group A phenotype requires a transfusion of 2 units of frozen plasma.Which of the following types are appropriate to select for transfusion?

What ABO phenotype would agglutinate in the presence of anti-A,B produced by group O individuals?

Match the immunodominant sugar that corresponds to the ABO system group or antigen. -Bombay

A patient's red cells are agglutinated by anti-B,but not by anti-A.This person would have which of the following ABO phenotypes?

According to Landsteiner's rule,what ABO antibody will be detected in a group A individual's serum?

Match the immunodominant sugar that corresponds to the ABO system group or antigen. -H antigen

Which of the following situations is most likely to cause intravascular hemolysis when an incompatible transfusion is given?

Most "naturally occurring" ABO system antibodies fall into which class?

What would be the agglutination reaction of red cells from a Bombay phenotype with anti-H lectin?

What percentage of the group A population are type A2?

Match the immunodominant sugar that corresponds to the ABO system group or antigen. -Group A

Why is it sometimes necessary to distinguish A1 and A2 blood types?

Approximately what is the percentage of individuals who demonstrate H in their saliva?

Match the immunodominant sugar that corresponds to the ABO system group or antigen. -Group O

The subgroup of A with the least amount of A antigen is:

What substances are found in the saliva of a group A person who also inherited the secretor gene?

Select the appropriate strategy if the results of red cell and serum testing in the ABO typing procedure have negative agglutination reactions.

A blood sample from a 90-year-old man was submitted to the blood bank for a type and screen before surgery.The forward type demonstrates as a group A,whereas the reverse type appears to be group AB.The most likely cause of the discrepancy is:

Immunology: Basic Principles and Applications in the Blood Bank

Blood Banking Reagents: Overview and Applications

Genetic Principles in Blood Banking

Rh Blood Group System

Other Blood Group Systems

Antibody Detection and Identification

Compatibility Testing

Blood Bank Automation for Transfusion Services

Adverse Complications of Transfusions

Hemolytic Disease of the Fetus and Newborn

Donor Selection and Phlebotomy

Testing of Donor Blood

Blood Component Preparation and Therapy

Transfusion Therapy in Selected Patients

Quality Assurance and Regulation of the Blood Industry and Safety Issues in the Blood Bank

Filters

What percentage of the group A population are type A₂?

Why is it sometimes necessary to distinguish A₁ and A₂ blood types?