AAB MT COMPREHENSIVE EXAMINATION TEST Questions
with Correct Answers (Grade A+)
Question 1: 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.
Question 2: What is the interval between blood donations?
Answer: 8 weeks
Question 3: The oral temperature of a donor must not exceed which value?
Answer: 37.5 degrees C
Question 4: What is the minimum acceptable hemoglobin for blood donors?
Answer: 12.5 g/dL for allogeneic donors
Question 5: What is the lowest acceptable hematocrit for allogeneic donors?
Answer: 38%
Question 6: What donor meets the requirement for age, pulse, weight, and blood pressure?
Answer: Age: 32, Pulse: 60, Weight (lb) 185, BP: 110/70
Question 7: How long must a pregnant woman be deferred?
Answer: 6 weeks postpartum
Question 8: 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.
Question 9: There is a 12-month deferment for each of the following donors EXCEPT:
Answer: Donor received the hepatitis B vaccine
Question 10: How long must a prospective donor with a history of malaria be deferred?
Answer: 3 years after cessation of treatment
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,Question 11: 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
Question 12: All of the following are causes of permanent donor deferral:
Answer: Confirmed HIV positive, family history of Creutzfedt-Jakob disease, and intravenous drug user
Question 13: All of the following are causes of permanent donor deferral EXCEPT:
Answer: Donor received the hepatitis B vaccine
Question 14: Current testing on all donor blood must include testing for which of the following?
Answer: Serological test for syphilis
Question 15: Which one of the following tests is not required by AABB and is therefore optional during
donor blood testing?
Answer: anti-HBc
Question 16: What is a commonly used screening method for the detection of HIV-1 antibodies?
Answer: Enzyme-linked immunosorbent assays (ELISA)
Question 17: Currently required viral hepatitis marker tests include all of the following:
Answer: Anti-HCV, Anti-HBc, and HBsAg
Question 18: Currently required viral hepatitis marker tests include all of the following EXCEPT:
Answer: anti-HAV
Question 19: When color coding is used for donor blood labels, what color is group A?
Answer: Yellow
Question 20: Which infectious agent is least likely to be transmitted by a blood infection?
Answer: HAV
Question 21: 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
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, Question 22: During the "window period," what is the only marker of HBV infection?
Answer: Anti-HBc
Question 23: 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
Question 24: Which viral agent causes the majority of cases of transfusion- associated hepatitis?
Answer: HCV
Question 25: All of the following are required viral marker testing for the human immunodeficiency
virus EXCEPT which one?
Answer: HIV-1 p24 antigen
Question 26: Which virus can be deadly to immunocompromised patients or premature infants?
Answer: CMV
Question 27: All of the following organisms have been implicated in bacterial contamination of donor
blood products EXCEPT which one?
Answer: Escherichia coli
Question 28: All of the following organisms have been implicated in bacterial contamination of donor
blood products:
Answer: Y. enterocolitica, C. freundii, and Pseudomonas putida
Question 29: Which one of the following parasites has NOT been transmitted by blood transfusion?
Answer: Naegleria
Question 30: Which parasites have been transmitted by blood transfusion?
Answer: Babesia, Plasmodium, and Trypanosoma
Question 31: What is the acceptable temperature range for a blood bank refrigerator?
Answer: 1-6 degrees C
Page 3
with Correct Answers (Grade A+)
Question 1: 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.
Question 2: What is the interval between blood donations?
Answer: 8 weeks
Question 3: The oral temperature of a donor must not exceed which value?
Answer: 37.5 degrees C
Question 4: What is the minimum acceptable hemoglobin for blood donors?
Answer: 12.5 g/dL for allogeneic donors
Question 5: What is the lowest acceptable hematocrit for allogeneic donors?
Answer: 38%
Question 6: What donor meets the requirement for age, pulse, weight, and blood pressure?
Answer: Age: 32, Pulse: 60, Weight (lb) 185, BP: 110/70
Question 7: How long must a pregnant woman be deferred?
Answer: 6 weeks postpartum
Question 8: 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.
Question 9: There is a 12-month deferment for each of the following donors EXCEPT:
Answer: Donor received the hepatitis B vaccine
Question 10: How long must a prospective donor with a history of malaria be deferred?
Answer: 3 years after cessation of treatment
Page 1
,Question 11: 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
Question 12: All of the following are causes of permanent donor deferral:
Answer: Confirmed HIV positive, family history of Creutzfedt-Jakob disease, and intravenous drug user
Question 13: All of the following are causes of permanent donor deferral EXCEPT:
Answer: Donor received the hepatitis B vaccine
Question 14: Current testing on all donor blood must include testing for which of the following?
Answer: Serological test for syphilis
Question 15: Which one of the following tests is not required by AABB and is therefore optional during
donor blood testing?
Answer: anti-HBc
Question 16: What is a commonly used screening method for the detection of HIV-1 antibodies?
Answer: Enzyme-linked immunosorbent assays (ELISA)
Question 17: Currently required viral hepatitis marker tests include all of the following:
Answer: Anti-HCV, Anti-HBc, and HBsAg
Question 18: Currently required viral hepatitis marker tests include all of the following EXCEPT:
Answer: anti-HAV
Question 19: When color coding is used for donor blood labels, what color is group A?
Answer: Yellow
Question 20: Which infectious agent is least likely to be transmitted by a blood infection?
Answer: HAV
Question 21: 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
Page 2
, Question 22: During the "window period," what is the only marker of HBV infection?
Answer: Anti-HBc
Question 23: 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
Question 24: Which viral agent causes the majority of cases of transfusion- associated hepatitis?
Answer: HCV
Question 25: All of the following are required viral marker testing for the human immunodeficiency
virus EXCEPT which one?
Answer: HIV-1 p24 antigen
Question 26: Which virus can be deadly to immunocompromised patients or premature infants?
Answer: CMV
Question 27: All of the following organisms have been implicated in bacterial contamination of donor
blood products EXCEPT which one?
Answer: Escherichia coli
Question 28: All of the following organisms have been implicated in bacterial contamination of donor
blood products:
Answer: Y. enterocolitica, C. freundii, and Pseudomonas putida
Question 29: Which one of the following parasites has NOT been transmitted by blood transfusion?
Answer: Naegleria
Question 30: Which parasites have been transmitted by blood transfusion?
Answer: Babesia, Plasmodium, and Trypanosoma
Question 31: What is the acceptable temperature range for a blood bank refrigerator?
Answer: 1-6 degrees C
Page 3
