AAB MT Immunohematology Exam Questions
and Answers | Latest Update 2026/2027 | Graded
A+ | Guaranteed PASS.
What is the interval between blood donations?
A. 6 weeks
B. 8 weeks
C. 12 weeks
D. 16 weeks - ANS-B. 8 weeks
What is the minimum acceptable hemoglobin for blood donor?
A. 11.5 g/dL for autologous donors
B. 12.0 g/dL for female donors
C. 12.5 g/dL for allogeneic donors
D. 13.0 g/dL for male donors - ANS-C. 12.5 g/dL for allogeneic donors
What is the lowest acceptable hematocrit for allogeneic blood donors?
A. 33%
B. 36%
C. 38%
D. 42% - ANS-C. 38%
What donor meets the requirement for age, pulse, weight, and blood pressure?
Age Pulse. Weight (pounds). Blood Pressure
A. 17 55 105 120/80
B. 32. 60 185 110/70
C. 43. 90 275 185/90
D. 65. 105 145 145/60 - ANS-B. 32. 60 185 110/70 How long must a pregnant woman be
deferred?
A. 1 week postpartum
,B. 4 weeks postpartum
C. 6 weeks postpartum
D. 8 weeks postpartum - ANS-C. 6 weeks postpartum
There is a 12 month deferment for each of the following donors EXCEPT which one?
A. Donor received a blood transfusion
B. Donor received a tattoo and body piercing
C. Donor had sex with a person with hepatitis
D. Donor received the hepatitis B vaccine - ANS-D. Donor received the hepatitis B vaccine
How long must a prospective donor with a history of malaria be deferred?
A. permanently
B. 3 years after cessation of treatment
C. 12 months after cessation of treatment
D. no deferral - ANS-B. 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?
A. no deferral as long as there is no other abnormality
B. temporary deferral for 12 months after completion of therapy
C. temporary deferral for 3 years after completion of treatment
D. permanent deferral - ANS-A. no deferral as long as there is no other abnormality All of the
following are causes of permanent donor deferral EXCEPT which one?
A. confirmed HIV positive
B. family history of Creutzfeldt-Jakob disease
C. intravenous drug user
D. incarcerated individual - ANS-D. incarcerated individual
What is the length of deferral for symptom-free donors immunized with oral polio, measles
(rubeola), or mumps vaccine?
A. 2 weeks
B. 4 weeks
C. 6 weeks
,D. 12 months - ANS-A. 2 weeks
Current testing on all donor blood must include testing for which of the following?
A. direct antiglobulin test
B. complete Rh phenotyping
C. serological test for syphilis
D. serological test for cytomegalovirus - ANS-C. serological test for syphilis
Which one of the following test is not required by AABB and is therefore optional during donor
blood testing?
A. RPR
B. anti-HIV
C. anti-HTLV
D. anti-HBc - ANS-D. anti-HBc
The oral temperature of a donor must not exceed which value?
A. 37.0 ° C
B. 37.5 ° C
C. 98.6 ° F
D. 99.0 ° F - ANS-B. 37.5 ° C
What is a commonly used screening method for the detection of HIV-1 antibodies?
A. latex agglutination
B. radioimmunoassay
C. nucleic acid techniques
D. enzyme-linked immunosorbent assays - ANS-D. enzyme-linked immunosorbent assays
Currently required viral hepatitis marker tests include all of the following EXCEPT which one?
A. anti-HAV
B. anti-HCV
, C. anti-HBc
D. HBsAg - ANS-A. anti-HAV
When color coding is used for donor blood labels, what color is group A?
A. yellow
B. pink
C. blue
D. black/gray/white - ANS-A. yellow
In the very early acute phase of hepatitis, which one of the following positive test would be
indicative of onset of a viremic state?
A. HBsAg
B. HBeAg
C. anti-HBc
D. anti-HBs - ANS-A. HBsAg
During the "window period," what is the only marker of HBV infection?
A. HBsAg
B. HBeAg
C. anti-HBc
D. anti-HBs - ANS-C. 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?
A. 3 months
B. 6 months
C. 1 year
D. 3 years - ANS-B. 6 months
Which viral agent causes the majority of cases of transfusion-associated hepatitis?
A. HAV
B. HBV
C. HCV
D. HDV - ANS-C. HCV
and Answers | Latest Update 2026/2027 | Graded
A+ | Guaranteed PASS.
What is the interval between blood donations?
A. 6 weeks
B. 8 weeks
C. 12 weeks
D. 16 weeks - ANS-B. 8 weeks
What is the minimum acceptable hemoglobin for blood donor?
A. 11.5 g/dL for autologous donors
B. 12.0 g/dL for female donors
C. 12.5 g/dL for allogeneic donors
D. 13.0 g/dL for male donors - ANS-C. 12.5 g/dL for allogeneic donors
What is the lowest acceptable hematocrit for allogeneic blood donors?
A. 33%
B. 36%
C. 38%
D. 42% - ANS-C. 38%
What donor meets the requirement for age, pulse, weight, and blood pressure?
Age Pulse. Weight (pounds). Blood Pressure
A. 17 55 105 120/80
B. 32. 60 185 110/70
C. 43. 90 275 185/90
D. 65. 105 145 145/60 - ANS-B. 32. 60 185 110/70 How long must a pregnant woman be
deferred?
A. 1 week postpartum
,B. 4 weeks postpartum
C. 6 weeks postpartum
D. 8 weeks postpartum - ANS-C. 6 weeks postpartum
There is a 12 month deferment for each of the following donors EXCEPT which one?
A. Donor received a blood transfusion
B. Donor received a tattoo and body piercing
C. Donor had sex with a person with hepatitis
D. Donor received the hepatitis B vaccine - ANS-D. Donor received the hepatitis B vaccine
How long must a prospective donor with a history of malaria be deferred?
A. permanently
B. 3 years after cessation of treatment
C. 12 months after cessation of treatment
D. no deferral - ANS-B. 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?
A. no deferral as long as there is no other abnormality
B. temporary deferral for 12 months after completion of therapy
C. temporary deferral for 3 years after completion of treatment
D. permanent deferral - ANS-A. no deferral as long as there is no other abnormality All of the
following are causes of permanent donor deferral EXCEPT which one?
A. confirmed HIV positive
B. family history of Creutzfeldt-Jakob disease
C. intravenous drug user
D. incarcerated individual - ANS-D. incarcerated individual
What is the length of deferral for symptom-free donors immunized with oral polio, measles
(rubeola), or mumps vaccine?
A. 2 weeks
B. 4 weeks
C. 6 weeks
,D. 12 months - ANS-A. 2 weeks
Current testing on all donor blood must include testing for which of the following?
A. direct antiglobulin test
B. complete Rh phenotyping
C. serological test for syphilis
D. serological test for cytomegalovirus - ANS-C. serological test for syphilis
Which one of the following test is not required by AABB and is therefore optional during donor
blood testing?
A. RPR
B. anti-HIV
C. anti-HTLV
D. anti-HBc - ANS-D. anti-HBc
The oral temperature of a donor must not exceed which value?
A. 37.0 ° C
B. 37.5 ° C
C. 98.6 ° F
D. 99.0 ° F - ANS-B. 37.5 ° C
What is a commonly used screening method for the detection of HIV-1 antibodies?
A. latex agglutination
B. radioimmunoassay
C. nucleic acid techniques
D. enzyme-linked immunosorbent assays - ANS-D. enzyme-linked immunosorbent assays
Currently required viral hepatitis marker tests include all of the following EXCEPT which one?
A. anti-HAV
B. anti-HCV
, C. anti-HBc
D. HBsAg - ANS-A. anti-HAV
When color coding is used for donor blood labels, what color is group A?
A. yellow
B. pink
C. blue
D. black/gray/white - ANS-A. yellow
In the very early acute phase of hepatitis, which one of the following positive test would be
indicative of onset of a viremic state?
A. HBsAg
B. HBeAg
C. anti-HBc
D. anti-HBs - ANS-A. HBsAg
During the "window period," what is the only marker of HBV infection?
A. HBsAg
B. HBeAg
C. anti-HBc
D. anti-HBs - ANS-C. 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?
A. 3 months
B. 6 months
C. 1 year
D. 3 years - ANS-B. 6 months
Which viral agent causes the majority of cases of transfusion-associated hepatitis?
A. HAV
B. HBV
C. HCV
D. HDV - ANS-C. HCV
