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MT AAB Immunohematology Exam Q&A
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MT AAB Immunohematology Exam Q&AAll of the following blood donors would be permanently deferred except
which one? Correct Ans - 38yr old male who received rabies vaccine
after a dog bite 3mos ago
What is the interval blood donations? Correct Ans - 8 weeks
The oral temperature of a donor must not exceed which value? Correct
Ans - 37.5C 99.5F
What is the minimum acceptable hemoglobin for blood donors? Correct
Ans - 12.5 g/dL for allogeneic donors
What is the lowest acceptable hematocrit for allogeneic blood donors?
Correct Ans - 38%
What donor meets the requirements for age, pulse, weight, and blood
pressure? Correct Ans - Age:32
Pulse:60
Weight(pounds):185
Blood pressure:110/70
How long must a pregnant woman be deferred? Correct Ans - 6 weeks
postpartum
There is a 12-month deferment for each of the following donors except which
one? Correct Ans - deferment: (1)donor received a blood transfusion
(2)donor received a tattoo and body piercing (3) donor had sex with a person
with hepatitis
except: donor received the hepatitis B vaccine
How long must a prospective donor with a history of malaria be deferred?
Correct Ans - 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? Correct Ans -
no deferral as long as there is no abnormality
All of the following are causes of permanent donor deferral except which one?
Correct Ans - incarcerated individuals
What is the length of deferral for symptom-free donors immunized with oral
polio, measles (rubeola), or mumps vaccine? Correct Ans - 2 weeks
Current testing on all donor blood must include testing for which of the
following? Correct Ans - serological test for syphilis
Which one of the following tests is not required by AABB and is therefore
optional during donor blood testing? Correct Ans - anti-HBc
What is a commonly used screening method for the detection of HIV-1
antibodies? Correct Ans - enzyme-linked immunosorbent assays
Currently required viral hepatitis marker tests include all of the following
except which one? Correct Ans - anti-HAV
When color coding is used for donor blood labels, what color is group A?
Correct Ans - yellow
Which infectious agent is least likely to be transmitted by a blood transfusion?
Correct Ans - HAV
In the very acute phase of hepatitis, which one of the following positive tests
would be indicative of onset of a viremic state? Correct Ans - HBsAg
During the "window period", what is the only marker of HBV infection?
Correct Ans - 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?
Correct Ans - 6 months
, Which viral agent causes the majority of cases of transfusion-associated
hepatitis? Correct Ans - HCV
All of the following are required viral marker testing for the human
immunodeficiency virus except which one? Correct Ans - HIV-1 p24
antigen
All of the following are required viral marker testing for the human
immunodeficiency virus(3) Correct Ans - anti-HIV-1, anti-HIV-2, anti-
HTL V-I/II
Which virus can be deadly to immunocompromised patients or premature
infants? Correct Ans - CMV
All of the following organisms have been implicated in bacterial
contamination of donor blood products except which one? Correct Ans -
Escherichia coli
All of the following organisms have been implicated in bacterial
contamination of donor blood products (3) Correct Ans - Yersinia
enterocolitica
Citrobacter freundii
Pseudomonas putida
Which one of the following parasites has not been transmitted by blood
transfusion? Correct Ans - Naegleria
What is the acceptable temperature range for a blood bank refrigerator?
Correct Ans - 1C - 6C
According to FDA regulations, if blood is to be transported, then what
temperature must be maintained during transportation? Correct Ans -
1C - 10C
What is the expiration date of red blood cells preserved with CPDA-1?
Correct Ans - 35 days
What is the experation date of red blood cells preserved with ADSOL?
Correct Ans - 42 days
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