Blood Bank Certification Exam
Questions and Complete Verified
Solutions
According to AABB standards, what is the minimum pH required for platelets?
6
A patient was given two units of blood in an emergency. The blood was type specific, but not
crossmatched. Further study revealed an anti-K in the pretransfusion sample. One unit was K-
positive. Serum obtained immediately posttransfusion failed to react with K-positive cells. This is
due to the antibody being:
adsorbed by the donor cells
A father donating Platelets for his son is connected to a continuous flow machine, which uses the
principle of centrifugation to separate platelets from whole blood. As the platelets are harvested,
all other remaining elements are returned to the donor. This method of platelet collection is known
as:
aphaeresis
Addition of which of the following will enhance the shelf-life of whole blood?
adenine
A mother is Rh-negative and the father Rh-positive. Their baby is Rh-negative. It may be
concluded that:
Page 1 of 25
,the father is heterozygous Rh-positive
Which of the following blood group systems is most commonly associated with delayed hemolytic
transfusion reactions?
Kidd
Rejuvenation of a unit of Red Blood Cells is a method used to:
restore 2,3-DPG and ATP to normal levels
Cold agglutinin syndrome is best associated with which of the following blood groups?
I/i
With regard to inheritance, most blood group systems are:
autosomal codominant
During the issue of an autologous unit of Whole Blood, the supernatant plasma is observed to be
dark red in color. What would be the best course of action?
Quarantine the until further testing determines disposition.
Leukocyte-poor Red Blood Cells would most likely be indicated for patients with a history of:
Febrile transfusion reaction
Fever and chills are symptoms of which of the following transfusion reactions?
febrile
In a delayed transfusion reaction, the causative antibody is generally too weak to be detected in
routine compatibility testing and antibody screening tests but becomes detectable at what point
after transfusion?
1 to 5 days
The most effective component to treat a patient with fibrinogen deficiency is:
cryoprecipitated AHF
The blood sample of choice for the pretransfusion testing of neonates with HDN is:
Maternal serum
A newborn demonstrates petechiae, ecchymosis, and mucosal bleeding. The preferred blood
component for this infant would be:
platelets
Page 2 of 25
, Results of a serum sample tested against a panel of reagent red cells gives presumptive evidence
of an alloantibody directed against a high incidence antigen. Further investigation to confirm the
specificity should include which of the following?
serum testing against red cells known to lack high incidence antigens
Which of the following represents an acceptably identified patient for sample collection and
transfusion?
A handwritten band with patients name and hospital identification number is affixed to the patients leg.
A 40-year-old man with autoimmune hemolytic anemia due to anti-E has a hemoglobin level of
10.8 gm/dL. This patient will most likely be treated with:
no transfusion
Anti-N is identified in a patients serum. If random crossmatches are performed on 10 donor units,
how many would be expected to be compatible?
3
Which of the following blood components contains the most Factor VIII concentration relative to
volume?
Cryoprecipitated AHF
Cryoprecipitated AHF:
is indicated for fibrinogen deficiencies
Which of the following HTLA antibodies is neutralizable by pooled human plasma?
anti-Ch
A 29-year-old male is hemorrhaging severely. He is AB, Rh-negative. Six units of blood are
required stat. Of the following types available in the Blood Bank, which would be most preferable
for crossmatch?
A, Rh-negative
HLA antibodies are:
induced by multiple transfusions
Which of the following tests is most commonly used to demonstrate antibodies that have become
attached to a patient's red cells in vivo?
Page 3 of 25
Questions and Complete Verified
Solutions
According to AABB standards, what is the minimum pH required for platelets?
6
A patient was given two units of blood in an emergency. The blood was type specific, but not
crossmatched. Further study revealed an anti-K in the pretransfusion sample. One unit was K-
positive. Serum obtained immediately posttransfusion failed to react with K-positive cells. This is
due to the antibody being:
adsorbed by the donor cells
A father donating Platelets for his son is connected to a continuous flow machine, which uses the
principle of centrifugation to separate platelets from whole blood. As the platelets are harvested,
all other remaining elements are returned to the donor. This method of platelet collection is known
as:
aphaeresis
Addition of which of the following will enhance the shelf-life of whole blood?
adenine
A mother is Rh-negative and the father Rh-positive. Their baby is Rh-negative. It may be
concluded that:
Page 1 of 25
,the father is heterozygous Rh-positive
Which of the following blood group systems is most commonly associated with delayed hemolytic
transfusion reactions?
Kidd
Rejuvenation of a unit of Red Blood Cells is a method used to:
restore 2,3-DPG and ATP to normal levels
Cold agglutinin syndrome is best associated with which of the following blood groups?
I/i
With regard to inheritance, most blood group systems are:
autosomal codominant
During the issue of an autologous unit of Whole Blood, the supernatant plasma is observed to be
dark red in color. What would be the best course of action?
Quarantine the until further testing determines disposition.
Leukocyte-poor Red Blood Cells would most likely be indicated for patients with a history of:
Febrile transfusion reaction
Fever and chills are symptoms of which of the following transfusion reactions?
febrile
In a delayed transfusion reaction, the causative antibody is generally too weak to be detected in
routine compatibility testing and antibody screening tests but becomes detectable at what point
after transfusion?
1 to 5 days
The most effective component to treat a patient with fibrinogen deficiency is:
cryoprecipitated AHF
The blood sample of choice for the pretransfusion testing of neonates with HDN is:
Maternal serum
A newborn demonstrates petechiae, ecchymosis, and mucosal bleeding. The preferred blood
component for this infant would be:
platelets
Page 2 of 25
, Results of a serum sample tested against a panel of reagent red cells gives presumptive evidence
of an alloantibody directed against a high incidence antigen. Further investigation to confirm the
specificity should include which of the following?
serum testing against red cells known to lack high incidence antigens
Which of the following represents an acceptably identified patient for sample collection and
transfusion?
A handwritten band with patients name and hospital identification number is affixed to the patients leg.
A 40-year-old man with autoimmune hemolytic anemia due to anti-E has a hemoglobin level of
10.8 gm/dL. This patient will most likely be treated with:
no transfusion
Anti-N is identified in a patients serum. If random crossmatches are performed on 10 donor units,
how many would be expected to be compatible?
3
Which of the following blood components contains the most Factor VIII concentration relative to
volume?
Cryoprecipitated AHF
Cryoprecipitated AHF:
is indicated for fibrinogen deficiencies
Which of the following HTLA antibodies is neutralizable by pooled human plasma?
anti-Ch
A 29-year-old male is hemorrhaging severely. He is AB, Rh-negative. Six units of blood are
required stat. Of the following types available in the Blood Bank, which would be most preferable
for crossmatch?
A, Rh-negative
HLA antibodies are:
induced by multiple transfusions
Which of the following tests is most commonly used to demonstrate antibodies that have become
attached to a patient's red cells in vivo?
Page 3 of 25
