Question 1

Antibody screening of the recipient is performed as a component of compatibility testing to detect:

Accepted Answer

A) red cell alloantibodies. 
B) irregular antigens on the recipient's red cells. 
C) human leukocyte antigen antibodies. 
D) incompatibilities with the donor's red cells. 
A) red cell alloantibodies. 
B) irregular antigens on the recipient's red cells. 
C) human leukocyte antigen antibodies. 
D) incompatibilities with the donor's red cells.

Question 2

A tube was received in the blood bank for crossmatching.The label was torn and the only information that was visible was the patient's last name and the medical record number.Which of the following is an acceptable procedure?

Accepted Answer

A) Request a recollection of the specimen. 
B) Call the phlebotomist back to relabel the tube. 
C) Reprint a label using the MRI as the identifier. 
D) Use the tube since the MRI is visible. 
A) Request a recollection of the specimen. 
B) Call the phlebotomist back to relabel the tube. 
C) Reprint a label using the MRI as the identifier. 
D) Use the tube since the MRI is visible.

Question 3

If an emergency exists and there is not enough time to perform a crossmatch for red cells,what is the correct procedure?

Accepted Answer

A) Release group O,D-negative whole blood. 
B) Release group O,D-negative red blood cells. 
C) Release group AB fresh frozen plasma until the blood type is performed. 
D) Release ABO-compatible blood based on the patient's prior record in the computer. 
A) Release group O,D-negative whole blood. 
B) Release group O,D-negative red blood cells. 
C) Release group AB fresh frozen plasma until the blood type is performed. 
D) Release ABO-compatible blood based on the patient's prior record in the computer.

Question 4

Compatibility procedures will address all of the following except to:

Accepted Answer

A) prevent formation of all red cell antibodies. 
B) prevent life-threatening transfusion reactions. 
C) maximize in vivo survival rate of red cells. 
D) check ABO compatibility. 
A) prevent formation of all red cell antibodies. 
B) prevent life-threatening transfusion reactions. 
C) maximize in vivo survival rate of red cells. 
D) check ABO compatibility.

Question 5

Your blood bank mistakenly released a D-positive red blood cell unit that subsequently transfused to a patient who was typed as D-negative.The patient had no history of a previous transfusion or pregnancy.Antibody detection testing was negative in pretransfusion testing.The crossmatch in this case was:

Accepted Answer

A) compatible at immediate spin. 
B) incompatible at immediate spin only. 
C) not necessary to perform. 
D) incompatible at antihuman globulin only. 
A) compatible at immediate spin. 
B) incompatible at immediate spin only. 
C) not necessary to perform. 
D) incompatible at antihuman globulin only.

Question 6

If the recipient was transfused within the last 3 months,how long from the time of collection can a sample be used for the crossmatch?

Accepted Answer

A) 3 days 
B) 5 days 
C) 7 days 
D) 10 days 
A) 3 days 
B) 5 days 
C) 7 days 
D) 10 days

Question 7

Select the correct statement regarding the collection of a blood sample for compatibility testing.

Accepted Answer

A) The sample must be labeled at the bedside. 
B) The sample requires a new numeric identifier for the patient for each admittance. 
C) The sample may be labeled at any time in an emergency. 
D) The sample does not require a means to identify the phlebotomist. 
A) The sample must be labeled at the bedside. 
B) The sample requires a new numeric identifier for the patient for each admittance. 
C) The sample may be labeled at any time in an emergency. 
D) The sample does not require a means to identify the phlebotomist.

Question 8

In which of the following situations can the crossmatch test be omitted?

Accepted Answer

A) In a patient who is receiving a directed donation 
B) In a patient who has received a massive transfusion within a 24-hour period 
C) In a patient who is pregnant 
D) In a bone marrow transplant recipient 
A) In a patient who is receiving a directed donation 
B) In a patient who has received a massive transfusion within a 24-hour period 
C) In a patient who is pregnant 
D) In a bone marrow transplant recipient

Question 9

An antibody screen on a patient with a prior history of transfusion was negative.The crossmatch was incompatible with 1 unit selected at AHG phase.The next step in the investigation would be to:

Accepted Answer

A) perform a prewarm procedure for crossmatching 
B) perform a direct antiglobulin test on the incompatible unit. 
C) redraw the patient and begin a new crossmatch. 
D) crossmatch a new unit and discard the incompatible unit. 
A) perform a prewarm procedure for crossmatching 
B) perform a direct antiglobulin test on the incompatible unit. 
C) redraw the patient and begin a new crossmatch. 
D) crossmatch a new unit and discard the incompatible unit.

Question 10

A patient was admitted to the hospital with acute bleeding.Anti-E was detected in the patient's serum.Four E-negative units of blood were crossmatched for the patient.The units were compatible at immediate spin and following the antiglobulin test.After the antiglobulin test was performed,IgG-sensitized red cells gave a 2+ agglutination reaction.The proper interpretation of this 2+ agglutination reaction is the:

Accepted Answer

A) antihuman globulin washing procedure was adequate. 
B) IgG-sensitized red cells spontaneously agglutinated. 
C) crossmatch was incompatible. 
D) patient's anti-E reacted with the IgG-sensitized red cells. 
A) antihuman globulin washing procedure was adequate. 
B) IgG-sensitized red cells spontaneously agglutinated. 
C) crossmatch was incompatible. 
D) patient's anti-E reacted with the IgG-sensitized red cells.

Antibody screening of the recipient is performed as a component of compatibility testing to detect:

A tube was received in the blood bank for crossmatching.The label was torn and the only information that was visible was the patient's last name and the medical record number.Which of the following is an acceptable procedure?

If an emergency exists and there is not enough time to perform a crossmatch for red cells,what is the correct procedure?

Compatibility procedures will address all of the following except to:

If the recipient was transfused within the last 3 months,how long from the time of collection can a sample be used for the crossmatch?

Select the correct statement regarding the collection of a blood sample for compatibility testing.

In which of the following situations can the crossmatch test be omitted?

An antibody screen on a patient with a prior history of transfusion was negative.The crossmatch was incompatible with 1 unit selected at AHG phase.The next step in the investigation would be to:

Immunology: Basic Principles and Applications in the Blood Bank

Blood Banking Reagents: Overview and Applications

Genetic Principles in Blood Banking

Abo and H Blood Group Systems and Secretor Status

Rh Blood Group System

Other Blood Group Systems

Antibody Detection and Identification

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

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Exam 8: Compatibility Testing

Antibody screening of the recipient is performed as a component of compatibility testing to detect:

A tube was received in the blood bank for crossmatching.The label was torn and the only information that was visible was the patient's last name and the medical record number.Which of the following is an acceptable procedure?

If an emergency exists and there is not enough time to perform a crossmatch for red cells,what is the correct procedure?

Compatibility procedures will address all of the following except to:

If the recipient was transfused within the last 3 months,how long from the time of collection can a sample be used for the crossmatch?

Select the correct statement regarding the collection of a blood sample for compatibility testing.

In which of the following situations can the crossmatch test be omitted?

An antibody screen on a patient with a prior history of transfusion was negative.The crossmatch was incompatible with 1 unit selected at AHG phase.The next step in the investigation would be to:

Immunology: Basic Principles and Applications in the Blood Bank

Blood Banking Reagents: Overview and Applications

Genetic Principles in Blood Banking

Abo and H Blood Group Systems and Secretor Status

Rh Blood Group System

Other Blood Group Systems

Antibody Detection and Identification

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