BOC Blood Bank Questions with complete Solutions Rated A+
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Course
Blood Bank
Institution
Blood Bank
BOC Blood Bank Questions with complete Solutions Rated A+
The most widely accepted QC test to measure probable Hematopoietic Progenitor Cell (HPC) engraftment is: - Answers CD34+ cell enumeration is the best way to evaluate HPC engraftment
In an emergency situation, what type of blood should be g...
BOC Blood Bank Questions with complete Solutions Rated A+
The most widely accepted QC test to measure probable Hematopoietic Progenitor Cell (HPC)
engraftment is: - Answers CD34+ cell enumeration is the best way to evaluate HPC engraftment
In an emergency situation, what type of blood should be given to a female patient of child-bearing age if
the ABO group and Rh type are unknown? - Answers Group O, Rh-negative red cells should be given
Cryoprecipitated AHF must contain a minimum of how many international units of Factor VIII - Answers
80 IU
NAT testing is required for this infectious agent - Answers HBV
To screen for HBV what must happen - Answers Nucleic acid test required for each donation
A patient's record shows a previous anti-Jkb, but the current antibody screen is negative. What further
testing should be done before transfusion - Answers give Jk(b-), crossmatch compatible blood
ABO-hemolytic disease of the newborn - Answers is usually seen only in the newborn of group O
mothers
Irradiation of a unit of Red Blood Cells is done to prevent the replication of donor - Answers lymphocytes
Criteria determining Rh immune globulin eligibility include - Answers mother has not been previously
immunized to the D antigen
Which of the following practices has been useful in reducing the incidence of Transfusion Related Acute
Lung Injury (TRALI) - Answers use of Fresh Frozen Plasma from male donors
A mother is Rh-negative and the father Rh-positive. Their baby is Rh-negative. It may be concluded that -
Answers the father is heterozygous for D
A blood donor has the genotype: hh, AB. Using anti-A and anti-B antisera, the donor's red cells will type
as group - Answers O
Which characteristics are true of all 3 of the following antibodies: anti-Fya, anti-Jka, and anti-K? -
Answers detected at IAT phase and may cause hemolytic disease of the fetus and newborn (HDFN) and
transfusion reactions
During initial investigation of a suspected hemolytic transfusion reaction, it was observed that Blood
Bank paperwork and patient sample and blood component labels were correct, the posttransfusion
reaction plasma was yellow as was the pretransfusion sample, and the direct antiglobulin test was
negative. Repeat ABO typing on the posttransfusion sample confirmed the pretransfusion results. What
is the next step in this investigation? - Answers no further serological testing is necessary
Red Blood Cells, Leukocytes Reduced must be stored at - Answers 1-6°C
, Which of the following is a characteristic of anti-i? - Answers reacts best at room temperature or 4°C
When untreated indicator cells are used in the rosette test, a positive result occurs when there are >6
rosettes/5 fields. In this case, the results indicate that the mother had a larger than normal (≥10 mL)
fetal maternal hemorrhage (FMH). Additional testing needs to be performed to calculate the FMH size. -
Answers mother has a larger than normal FMH
The Donath-Landsteiner test is diagnostic for PCH. The antibody is IgG and is biphasic: hemolysis occurs
when the antibody is incubated with cells and cold temperatures and then incubated at 37°C. Often the
antibody demonstrates specificity towards the high-incidence antigen P (not to be confused with P1).
The antibody screen is usually negative and the patient's red cells are coated with complement. -
Answers paroxysmal cold hemoglobinuria (PCH)
Which of the following phenotypes will react with anti-f? - Answers rr
An antibody that causes in vitro hemolysis and reacts with the red cells of 3 out of 10 AHG-crossmatched
donor units is most likely
Lewis antibodies may bind complement and fresh serum that contains anti-Lea may hemolyze Le(a+) red
cells in vitro. Approximately 22% of the population is Le(a+) - Answers anti-Lea
Ax cells are more strongly reactive with anti-A,B than with anti-A and the plasma frequently has anti-A1
present. - Answers anti-A zero, anti-B zero, anti-AB 2+
Upon inspection, a unit of Apheresis Platelets is noted to have visible clots, but otherwise appears
normal. The technologist should: - Answers quarantine for Gram stain and culture
The most appropriate laboratory test for early detection of acute posttransfusion hemolysis is - Answers
visual inspection for free plasma hemoglobin
What is the most important consideration for a patient requiring red cell transfusion due to severe
anemia when their serum contains a warm autoantibody - Answers determine the presence of
underlying alloantibody(ies)
For a patient who has suffered an acute hemolytic transfusion reaction, the primary treatment goal
should be to - Answers reverse hypotension and minimize renal damage
What antigens would be found in the saliva of an individual with the genotype Sese Lele AO HH
Lea, Leb, A, H - Answers Due to the inheritance of the Leand Se genes, Lea and Leb antigens will be
present in the saliva. Due to the inheritance of the Se, A,andH genes, A and H antigens will also be
present.
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