MT AAB Immunohematology
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All of the following blood donors would be permanently deferred except which one? - (correct Answer) -
38yr old male who received rabies vaccine after a dog bite 3mos ago
What is the interval blood donations? - (correct Answer) - 8 weeks
The oral temperature of a donor must not exceed which value? - (correct Answer) - 37.5C 99.5F
What is the minimum acceptable hemoglobin for blood donors? - (correct Answer) - 12.5 g/dL for
allogeneic donors
What is the lowest acceptable hematocrit for allogeneic blood donors? - (correct Answer) - 38%
What donor meets the requirements for age, pulse, weight, and blood pressure? - (correct Answer) -
Age:32
Pulse:60
Weight(pounds):185
Blood pressure:110/70
How long must a pregnant woman be deferred? - (correct Answer) - 6 weeks postpartum
There is a 12-month deferment for each of the following donors except which one? - (correct Answer) -
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 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? - (correct Answer) - no deferral as long as there is no abnormality
All of the following are causes of permanent donor deferral except which one? - (correct Answer) -
incarcerated individuals
What is the length of deferral for symptom-free donors immunized with oral polio, measles (rubeola), or
,mumps vaccine? - (correct Answer) - 2 weeks
Current testing on all donor blood must include testing for which of the following? - (correct Answer) -
serological test for syphilis
Which one of the following tests is not required by AABB and is therefore optional during donor blood
testing? - (correct Answer) - anti-HBc
What is a commonly used screening method for the detection of HIV-1 antibodies? - (correct Answer) -
enzyme-linked immunosorbent assays
Currently required viral hepatitis marker tests include all of the following except which one? - (correct
Answer) - anti-HAV
When color coding is used for donor blood labels, what color is group A? - (correct Answer) - yellow
Which infectious agent is least likely to be transmitted by a blood transfusion? - (correct Answer) - 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 Answer) - HBsAg
During the "window period", what is the only marker of HBV infection? - (correct 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? - (correct Answer) - 6 months
Which viral agent causes the majority of cases of transfusion-associated hepatitis? - (correct Answer) -
HCV
All of the following are required viral marker testing for the human immunodeficiency virus except which
one? - (correct Answer) - HIV-1 p24 antigen
All of the following are required viral marker testing for the human immunodeficiency virus(3) - (correct
Answer) - anti-HIV-1, anti-HIV-2, anti-HTL V-I/II
Which virus can be deadly to immunocompromised patients or premature infants? - (correct Answer) -
CMV
All of the following organisms have been implicated in bacterial contamination of donor blood products
except which one? - (correct Answer) - Escherichia coli
All of the following organisms have been implicated in bacterial contamination of donor blood products
(3) - (correct Answer) - Yersinia enterocolitica
Citrobacter freundii
Pseudomonas putida
Which one of the following parasites has not been transmitted by blood transfusion? - (correct Answer) -
Naegleria
What is the acceptable temperature range for a blood bank refrigerator? - (correct Answer) - 1C - 6C
, According to FDA regulations, if blood is to be transported, then what temperature must be maintained
during transportation? - (correct Answer) - 1C - 10C
What is the expiration date of red blood cells preserved with CPDA-1? - (correct Answer) - 35 days
What is the experation date of red blood cells preserved with ADSOL? - (correct Answer) - 42 days
What is the shelf life of cryoprecipitated antihemophilic factor when stored at -18C or lower? - (correct
Answer) - 1 year
What is the shelf life of fresh frozen plasma that is stored at -18C or lower? - (correct Answer) - 1 year
What is the optimum temperature for thawing fresh frozen plasma? - (correct Answer) - 30C - 37C
What is the shelf life of platelet concentrates? - (correct Answer) - 5 days at 20C - 24C with constant
agitation
If the hermetic seal on a unit of packed red blood cells has been broken, how soon must the product be
used if stored in the blood bank refrigerator? - (correct Answer) - 24 hours
Which biochemical change does not occur in stored blood? - (correct Answer) - Plasma K+ decreases
Which biochemical change occurs in stored blood? (3) - (correct Answer) - plasma pH decreases
plasma Na+ decreases
2,3-DPG decreases
Which one of the following is not a labeling requirement of specimens for crossmatching? - (correct
Answer) - ordering physician
All of the following statements concerning autologous transfusions are true except which one? - (correct
Answer) - There are no donor blood requirements for them
In which autologous procedure is blood drawn and stored before the anticipated elective surgery? -
(correct 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? - (correct Answer) - 72 hours
Which statement concerning the criteria for presurgical autologous donations is true? - (correct 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?
- (correct Answer) - ABO/Rh testing
What procedure involves the withdrawal of blood is to obtain plasma and subsequent reinfusion of the
red blood cells into the donor? - (correct 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? - (correct Answer) - total protein
Save
All of the following blood donors would be permanently deferred except which one? - (correct Answer) -
38yr old male who received rabies vaccine after a dog bite 3mos ago
What is the interval blood donations? - (correct Answer) - 8 weeks
The oral temperature of a donor must not exceed which value? - (correct Answer) - 37.5C 99.5F
What is the minimum acceptable hemoglobin for blood donors? - (correct Answer) - 12.5 g/dL for
allogeneic donors
What is the lowest acceptable hematocrit for allogeneic blood donors? - (correct Answer) - 38%
What donor meets the requirements for age, pulse, weight, and blood pressure? - (correct Answer) -
Age:32
Pulse:60
Weight(pounds):185
Blood pressure:110/70
How long must a pregnant woman be deferred? - (correct Answer) - 6 weeks postpartum
There is a 12-month deferment for each of the following donors except which one? - (correct Answer) -
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 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? - (correct Answer) - no deferral as long as there is no abnormality
All of the following are causes of permanent donor deferral except which one? - (correct Answer) -
incarcerated individuals
What is the length of deferral for symptom-free donors immunized with oral polio, measles (rubeola), or
,mumps vaccine? - (correct Answer) - 2 weeks
Current testing on all donor blood must include testing for which of the following? - (correct Answer) -
serological test for syphilis
Which one of the following tests is not required by AABB and is therefore optional during donor blood
testing? - (correct Answer) - anti-HBc
What is a commonly used screening method for the detection of HIV-1 antibodies? - (correct Answer) -
enzyme-linked immunosorbent assays
Currently required viral hepatitis marker tests include all of the following except which one? - (correct
Answer) - anti-HAV
When color coding is used for donor blood labels, what color is group A? - (correct Answer) - yellow
Which infectious agent is least likely to be transmitted by a blood transfusion? - (correct Answer) - 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 Answer) - HBsAg
During the "window period", what is the only marker of HBV infection? - (correct 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? - (correct Answer) - 6 months
Which viral agent causes the majority of cases of transfusion-associated hepatitis? - (correct Answer) -
HCV
All of the following are required viral marker testing for the human immunodeficiency virus except which
one? - (correct Answer) - HIV-1 p24 antigen
All of the following are required viral marker testing for the human immunodeficiency virus(3) - (correct
Answer) - anti-HIV-1, anti-HIV-2, anti-HTL V-I/II
Which virus can be deadly to immunocompromised patients or premature infants? - (correct Answer) -
CMV
All of the following organisms have been implicated in bacterial contamination of donor blood products
except which one? - (correct Answer) - Escherichia coli
All of the following organisms have been implicated in bacterial contamination of donor blood products
(3) - (correct Answer) - Yersinia enterocolitica
Citrobacter freundii
Pseudomonas putida
Which one of the following parasites has not been transmitted by blood transfusion? - (correct Answer) -
Naegleria
What is the acceptable temperature range for a blood bank refrigerator? - (correct Answer) - 1C - 6C
, According to FDA regulations, if blood is to be transported, then what temperature must be maintained
during transportation? - (correct Answer) - 1C - 10C
What is the expiration date of red blood cells preserved with CPDA-1? - (correct Answer) - 35 days
What is the experation date of red blood cells preserved with ADSOL? - (correct Answer) - 42 days
What is the shelf life of cryoprecipitated antihemophilic factor when stored at -18C or lower? - (correct
Answer) - 1 year
What is the shelf life of fresh frozen plasma that is stored at -18C or lower? - (correct Answer) - 1 year
What is the optimum temperature for thawing fresh frozen plasma? - (correct Answer) - 30C - 37C
What is the shelf life of platelet concentrates? - (correct Answer) - 5 days at 20C - 24C with constant
agitation
If the hermetic seal on a unit of packed red blood cells has been broken, how soon must the product be
used if stored in the blood bank refrigerator? - (correct Answer) - 24 hours
Which biochemical change does not occur in stored blood? - (correct Answer) - Plasma K+ decreases
Which biochemical change occurs in stored blood? (3) - (correct Answer) - plasma pH decreases
plasma Na+ decreases
2,3-DPG decreases
Which one of the following is not a labeling requirement of specimens for crossmatching? - (correct
Answer) - ordering physician
All of the following statements concerning autologous transfusions are true except which one? - (correct
Answer) - There are no donor blood requirements for them
In which autologous procedure is blood drawn and stored before the anticipated elective surgery? -
(correct 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? - (correct Answer) - 72 hours
Which statement concerning the criteria for presurgical autologous donations is true? - (correct 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?
- (correct Answer) - ABO/Rh testing
What procedure involves the withdrawal of blood is to obtain plasma and subsequent reinfusion of the
red blood cells into the donor? - (correct 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? - (correct Answer) - total protein
