Blood Bank Certification Exam Questions and Verified Answers 2023, 2024

QUESTIONS AND ANSWERS 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:

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

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 patient’s names and hospital identification number is affixed to the patient’s 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 patient’s 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