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AAB (MT) 2024 EXAM QUESTIONS WITH VERIFIED ANSWERS
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AAB (MT) 2024 EXAM QUESTIONS WITH VERIFIED ANSWERS
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AAB (MT) 2024 EXAM QUESTIONS WITHVERIFIED ANSWERS
All of the following donors would be permanently deferred EXCEPT which one? -
Answer-38-year-old male who received rabies vaccine after a dog bite 3 months ago
All of the following donors would be permanently deferred: - Answer-75-year-old male
who had acute hepatitis 20 years ago following surgery, 19-y/o first-time donor who
received human growth hormone 12 years ago, and a 24-y/o donor with a history of a
positive test for Hepatitis C from another blood center.
What is the interval between blood donations? - Answer-8 weeks
The oral temperature of a donor must not exceed which value? - Answer-37.5 degrees C
What is the minimum acceptable hemoglobin for blood donors? - Answer-12.5 g/dL for
allogeneic donors
What is the lowest acceptable hematocrit for allogeneic donors? - Answer-38%
What donor meets the requirement for age, pulse, weight, and blood pressure? - Answer-
Age: 32, Pulse: 60, Weight (lb) 185, BP: 110/70
How long must a pregnant woman be deferred? - Answer-6 weeks postpartum
There is a 12-month deferment for each of the following donors: - Answer-Donor
received a blood transfusion, donor received a tattoo and body piercing, donor had sex
with a person with hepatitis.
There is a 12-month deferment for each of the following donors EXCEPT: - Answer-
Donor received the hepatitis B vaccine
How long must a prospective donor with a history of malaria be deferred? - Answer-3
years after cessation of treatment
A lab tech who has a positive tuberculin skin test wants to donate blood. If he/she meets
all the other criteria, how long is the deferral? - Answer-No deferral as long as there is no
other abnormality
All of the following are causes of permanent donor deferral: - Answer-Confirmed HIV
positive, family history of Creutzfedt-Jakob disease, and intravenous drug user
All of the following are causes of permanent donor deferral EXCEPT: - Answer-Donor
received the hepatitis B vaccine
,Current testing on all donor blood must include testing for which of the following? -
Answer-Serological test for syphilis
Which one of the following tests is not required by AABB and is therefore optional during
donor blood testing? - Answer-anti-HBc
What is a commonly used screening method for the detection of HIV-1 antibodies? -
Answer-Enzyme-linked immunosorbent assays (ELISA)
Currently required viral hepatitis marker tests include all of the following: - Answer-Anti-
HCV, Anti-HBc, and HBsAg
Currently required viral hepatitis marker tests include all of the following EXCEPT: -
Answer-anti-HAV
When color coding is used for donor blood labels, what color is group A? - Answer-
Yellow
Which infectious agent is least likely to be transmitted by a blood infection? - Answer-
HAV
In the very early acute phase of hepatitis, which one of the following tests would be
indicative of onset of a viremic state? - Answer-HBsAg
During the "window period," what is the only marker of HBV infection? - Answer-Anti-HBc
What is the minimum length of time that the patient's serum must remain positive for
HBsAg before the individual is referred to as a chronic carrier? - Answer-6 months
Which viral agent causes the majority of cases of transfusion-associated hepatitis? -
Answer-HCV
All of the following are required viral marker testing for the human immunodeficiency
virus EXCEPT which one? - Answer-HIV-1 p24 antigen
Which virus can be deadly to immunocompromised patients or premature infants? -
Answer-CMV
All of the following organisms have been implicated in bacterial contamination of donor
blood products EXCEPT which one? - Answer-Escherichia coli
All of the following organisms have been implicated in bacterial contamination of donor
blood products: - Answer-Y. enterocolitica, C. freundii, and Pseudomonas putida
Which one of the following parasites has NOT been transmitted by blood transfusion? -
Answer-Naegleria
,Which parasites have been transmitted by blood transfusion? - Answer-Babesia,
Plasmodium, and Trypanosoma
What is the acceptable temperature range for a blood bank refrigerator? - Answer-1-6
degrees C
According to FDA regulations, if blood is to be transported, then what temperature must
be maintained during transportation? - Answer-1-10 degrees C
What is the expiration date of RBCs preserved with CPDA-1? - Answer-35 days
What is the expiration date of RBCs preserved with ADSOL? - Answer-42 days
What is the shelf life of cryoprecipitated antihemolytic factor when stored at -18 degrees
C or lower? - Answer-1 year
What is the shelf life of FFP that is stored at -18 degrees C or lower? - Answer-1 year
What is the optimum temperature for thawing FFP? - Answer-30-37 degrees C
What is the shelf life of platelet concentrates? - Answer-5 days at 20-24 degrees C with
constant agitation
If the hermetic seal on a unit of packed RBCs has been broken, how soon must the
product be used if stored in the blood bank refrigerator? - Answer-24 hours
Which biochemical change does NOT occur in stored blood? - Answer-Plasma K+
decreases
Which biochemical changes occur in stored blood? - Answer-Plasma pH decreases,
plasma Na+ decreases, and 2,3-DPG decreases
Which one of the following is NOT a labeling requirement of specimens for
crossmatching? - Answer-Ordering physician
The following are labeling requirements of specimens for crossmatching? - Answer-
Collection date, patient's name, hospital number
All of the following statements concerning autologous transfusions are true EXCEPT
which one? - Answer-There are no donor blood requirements for them
All of the following statements concerning autologous transfusions are true: - Answer-
They prevent alloimmunization, they are the safest possible transfusions, and they
eliminate the risk of transfusion-transmitted infections.
, In which autologous procedure is blood drawn and stored before the anticipated elective
surgery? - Answer-Preoperative collection
For autologous blood donations, blood should not be drawn from the donor-patient within
how many hours before the anticipated operation or transfusion? - Answer-72 hours
Which statement concerning the criteria for presurgical autologous donations is true? -
Answer-Donor hemoglobin must be at least 11.0 g/dL
Which of the following pretransfusion tests must be determined for an autologous
transfusion recipient? - Answer-ABO/Rh testing
What procedure involves the withdrawal of blood to obtain plasma abd subsequent
reinfusion of the RBCs into the donor? - Answer-Plasmapheresis
Collection of plasma by pheresis more often than once every 8 weeks necessitates that
which analyte(s) is(are) monitored at 4-month intervals? - Answer-Total protein
After donating a unit of whole blood, how long must a donor wait before he/she is eligible
for plateletpheresis? - Answer-72 hours
How long must a plasmapheresis donor wait before donating whole blood? - Answer-48
hours
What is the separation of WBCs by reversible filtration or centrifugation called? - Answer-
Leukapheresis
Different genes that occupy a specific locus of a chromosome are called: - Answer-
Alleles
Which description best describes an amorph? - Answer-Gene with no directly observable
product
What term is used to describe two identical alleles at a particular locus? - Answer-
Homozygous
Which term best describes most blood group genes? - Answer-Codominant
Which term best describes the gene inheritance of most blood group systems? - Answer-
Autosomal codominant
Which one of the following stimulates the production of antibodies? - Answer-Antigen
What term best describes antibodies that are produced after exposure to foreign antigens
that are stimulated by transfusion or pregnancy? - Answer-Alloantibodies
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