Question 1

If an intrauterine transfusion is indicated, which of the following is acceptable?

Accepted Answer

A)  Red blood cells typing the same the mother 
B)  Nonirradiated units of blood are preferred. 
C)  Only type O red blood cells 
D)  Units with concentrated white blood cells 
A)  Red blood cells typing the same the mother 
B)  Nonirradiated units of blood are preferred. 
C)  Only type O red blood cells 
D)  Units with concentrated white blood cells C

Question 2

A positive DAT may be seen in:

Accepted Answer

A)  warm autoimmune hemolytic anemia. 
B)  cold agglutinin syndrome. 
C)  hemolytic transfusion reaction. 
D)  all of the above. 
A)  warm autoimmune hemolytic anemia. 
B)  cold agglutinin syndrome. 
C)  hemolytic transfusion reaction. 
D)  all of the above. D

Question 3

What test(s) are involved when a physician orders a 4-unit crossmatch on a patient?

Accepted Answer

A)  IS crossmatch 
B)  AHG crossmatch 
C)  ABO, Rh, antibody screen, IS crossmatch 
D)  ABO, Rh, DAT, IS crossmatch 
A)  IS crossmatch 
B)  AHG crossmatch 
C)  ABO, Rh, antibody screen, IS crossmatch 
D)  ABO, Rh, DAT, IS crossmatch C

Question 4

Personalized medicine involves:

Accepted Answer

A)  individualized treatment for patients. 
B)  prevention of alloimmunization. 
C)  the use of a national database. 
D)  all of these. . 
A)  individualized treatment for patients. 
B)  prevention of alloimmunization. 
C)  the use of a national database. 
D)  all of these. .

Question 5

A 40-year-old male presented in the ER with acute bleeding. The technologist received a specimen but was unable to resolve a typing discrepancy between the forward and reverse typings. What blood type should the patient receive for emergency transfusion?

Accepted Answer

A)  Type-specific uncrossmatched packed RBCs 
B)  O-negative crossmatched packed RBCs 
C)  O-negative uncrossmatched packed RBCs 
D)  Electronic crossmatched blood 
A)  Type-specific uncrossmatched packed RBCs 
B)  O-negative crossmatched packed RBCs 
C)  O-negative uncrossmatched packed RBCs 
D)  Electronic crossmatched blood

Question 6

In which department of the blood bank laboratory would an ABO discrepancy be resolved?

Accepted Answer

A)  Component preparation and storage 
B)  Donor processing 
C)  Main laboratory 
D)  Reference laboratory 
A)  Component preparation and storage 
B)  Donor processing 
C)  Main laboratory 
D)  Reference laboratory

Question 7

The label on the recipient's pretransfusion specimen

Accepted Answer

A)  cannot be a barcode. 
B)  need not include phlebotomist ID. 
C)  must duplicate patient wristband information. 
D)  must be affixed prior to collection. 
A)  cannot be a barcode. 
B)  need not include phlebotomist ID. 
C)  must duplicate patient wristband information. 
D)  must be affixed prior to collection.

Question 8

A three-cell antibody screening set provides antigen expression in all major blood group systems except Kell.

Accepted Answer

A)  homozygous 
B)  heterozygous 
C)  homogenous 
D)  heterogenous 
A)  homozygous 
B)  heterozygous 
C)  homogenous 
D)  heterogenous

Question 9

Immediate spin resulting in agglutination may be caused by

Accepted Answer

A)  matching ABO groups between donor and recipient. 
B)  cold reacting allo- or autoantibodies. 
C)  too much saline in the reagents used. 
D)  prewarming the specimens. 
A)  matching ABO groups between donor and recipient. 
B)  cold reacting allo- or autoantibodies. 
C)  too much saline in the reagents used. 
D)  prewarming the specimens.

Question 10

The advantages of electronic crossmatching as compared to serologic crossmatch include

Accepted Answer

A)  less specimen is required. 
B)  less time is required. 
C)  automatic alters of discrepancy. 
D)  all of these. 
A)  less specimen is required. 
B)  less time is required. 
C)  automatic alters of discrepancy. 
D)  all of these.

Question 11

Where can an identification band be placed on a double arm amputee?

Accepted Answer

A)  Ankle 
B)  Head 
C)  Torso 
D)  All of these 
A)  Ankle 
B)  Head 
C)  Torso 
D)  All of these

Question 12

Why would an Rh type be ordered on a cord blood sample?

Accepted Answer

A)  To determine mother's candidacy for RhIG if she is Rh-negative 
B)  To determine mother's candidacy for RhIG if she is Rh-positive 
C)  Because the mother had a spontaneous abortion 
D)  None of the above 
A)  To determine mother's candidacy for RhIG if she is Rh-negative 
B)  To determine mother's candidacy for RhIG if she is Rh-positive 
C)  Because the mother had a spontaneous abortion 
D)  None of the above

Question 13

All of the following procedures might be done in an investigation of an ABO discrepancy except:

Accepted Answer

A)  increasing incubation time for reverse grouping. 
B)  secretor studies. 
C)  neutralization studies with urine. 
D)  testing with anti-A1 lectin. 
A)  increasing incubation time for reverse grouping. 
B)  secretor studies. 
C)  neutralization studies with urine. 
D)  testing with anti-A1 lectin.

Question 14

Blood is collected Saturday in the emergency room for possible transfusion. The patient is admitted to the hospital and on Wednesday it is determined that the transfusion is truly needed.

Accepted Answer

A)  The specimen can be used for a crossmatch because the patient did not yet receive blood. 
B)  The specimen must be recollected because the patient's location at the facility has changed. 
C)  The specimen must be recollected because more than 3 days have passed. 
D)  The specimen must be recollected because it must be collected the same day as the crossmatch. 
A)  The specimen can be used for a crossmatch because the patient did not yet receive blood. 
B)  The specimen must be recollected because the patient's location at the facility has changed. 
C)  The specimen must be recollected because more than 3 days have passed. 
D)  The specimen must be recollected because it must be collected the same day as the crossmatch.

Question 15

A STAT type and screen comes from surgery. Your institution uses a blood bank band ID bracelet system. The nurse who obtained specimens did not label them with the blood bank number before she handed them to transport to take to the laboratory. What would be the most appropriate action to take?

Accepted Answer

A)  Call surgery and have the nurse come down and properly label the specimens. 
B)  Accept the specimen as is. 
C)  Reject the specimen and have it recollected. 
D)  Label the specimen yourself and continue with testing. 
A)  Call surgery and have the nurse come down and properly label the specimens. 
B)  Accept the specimen as is. 
C)  Reject the specimen and have it recollected. 
D)  Label the specimen yourself and continue with testing.

Question 16

Why is reviewing a potential recipient's historical data important?

Accepted Answer

A)  Antibodies from previous transfusions can decrease to undetectable levels. 
B)  Current medications may produce unusual results. 
C)  Donor units must be negative antigens to previous antibodies even if none are currently present. 
D)  All of these are reasons to review patient historical data. 
A)  Antibodies from previous transfusions can decrease to undetectable levels. 
B)  Current medications may produce unusual results. 
C)  Donor units must be negative antigens to previous antibodies even if none are currently present. 
D)  All of these are reasons to review patient historical data.

Question 17

Which of the following would prolong labeling of the packed red blood cell unit?

Accepted Answer

A)  Nonreactive STS 
B)  Anti-K in donor plasma 
C)  ALT = 31 U/L 
D)  None of the above 
A)  Nonreactive STS 
B)  Anti-K in donor plasma 
C)  ALT = 31 U/L 
D)  None of the above

Question 18

How are 8 units of cryoprecipitate usually issued?

Accepted Answer

A)  As eight individual units 
B)  As one pooled unit 
C)  As four multiple units of two 
D)  None of the above 
A)  As eight individual units 
B)  As one pooled unit 
C)  As four multiple units of two 
D)  None of the above

Question 19

Electronic crossmatching

Accepted Answer

A)  does not eliminate the need for a serologic crossmatch. 
B)  must confirm current with historical recipient's ABO group. 
C)  disregards discrepancies between recipient and donor unit. 
D)  allows the antibody screening to be eliminated. 
A)  does not eliminate the need for a serologic crossmatch. 
B)  must confirm current with historical recipient's ABO group. 
C)  disregards discrepancies between recipient and donor unit. 
D)  allows the antibody screening to be eliminated.

Question 20

Possible reasons for incompatibilities after initial spin during a crossmatch include:

Accepted Answer

A)  new alloantibody in recipient's plasma. 
B)  alloantibody to a low-incidence present is on the donor unit red blood cells. 
C)  warm-reactive autoantibody is present in the recipient's plasma. 
D)  all of these reasons. 
A)  new alloantibody in recipient's plasma. 
B)  alloantibody to a low-incidence present is on the donor unit red blood cells. 
C)  warm-reactive autoantibody is present in the recipient's plasma. 
D)  all of these reasons.

Exam 11: Pre-Transfusion Testing

If an intrauterine transfusion is indicated, which of the following is acceptable?

A positive DAT may be seen in:

What test(s) are involved when a physician orders a 4-unit crossmatch on a patient?

Personalized medicine involves:

A 40-year-old male presented in the ER with acute bleeding. The technologist received a specimen but was unable to resolve a typing discrepancy between the forward and reverse typings. What blood type should the patient receive for emergency transfusion?

In which department of the blood bank laboratory would an ABO discrepancy be resolved?

The label on the recipient's pretransfusion specimen

A three-cell antibody screening set provides antigen expression in all major blood group systems except Kell.

Immediate spin resulting in agglutination may be caused by

The advantages of electronic crossmatching as compared to serologic crossmatch include

Where can an identification band be placed on a double arm amputee?

Why would an Rh type be ordered on a cord blood sample?

All of the following procedures might be done in an investigation of an ABO discrepancy except:

Blood is collected Saturday in the emergency room for possible transfusion. The patient is admitted to the hospital and on Wednesday it is determined that the transfusion is truly needed.

A STAT type and screen comes from surgery. Your institution uses a blood bank band ID bracelet system. The nurse who obtained specimens did not label them with the blood bank number before she handed them to transport to take to the laboratory. What would be the most appropriate action to take?

Why is reviewing a potential recipient's historical data important?

Which of the following would prolong labeling of the packed red blood cell unit?

How are 8 units of cryoprecipitate usually issued?

Electronic crossmatching

Possible reasons for incompatibilities after initial spin during a crossmatch include:

Red Blood Cells and Platelet Preservation: Historical Perspectives and Current Trends

Basic Genetics

Fundamentals of Immunology

Concepts in Molecular Biology

The Antiglobulin Test

The Abo Blood Group System

The Rh Blood Group System

Blood Group Terminology and Common Blood Groups

Uncommon Blood Groups

Detection and Identification of Antibodies

Blood Bank Technologies and Automation

Donor Selection

Transfusion-Transmitted Diseases

Component Preparation

Transfusion Therapy

Adverse Effects of Blood Transfusion

Apheresis

Cellular Therapy in the Transplant Setting

Hemolytic Disease of the Fetus and Newborn

Autoimmune Hemolytic Anemias

Tissue Banking As Part of the Transfusion Service

The Hla System

Relationship Testing

Quality Management

Patient Blood Management

Transfusion Safety and Federal Regulatory Requirements

Laboratory Information Systems in the Blood Bank

Medicolegal and Ethical Aspects of Providing Blood Collection and Transfusion Services

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