BOC Blood Bank Exam |238 Questions
and Answers
1) The minimum Hgb concentration in a fingerstick from a male blood donor
is:
a. 12.0 g/dL (120 g/L)
b. 12.5 g/dL (125 g/L)
c. 13.5 g/dL (135 g/L)
d. 15.0 g/dL (150 g/L) - -b. 12.5 g/dL (125 g/L)
(All donors, regardless of sex, require a minimum hemoglobin of 12.5 g/dL
[125 g/L]. The value must not be performed on an earlobe stick.)
- 4) Which of the following constitutes permanent rejection status of a
donor?
a. a tattoo 5 months ago
b. recent close contact with a patient with viral hepatitis
c. 2 units of blood transfused 4 months previously
d. confirmed positive test for HbsAg 10 yrs. earlier - -d. confirmed positive
test for HbsAg 10 yrs. earlier
(A positive test for HbsAg at any time is an indefinite deferral.)
- 6) Below are the results of the history obtained from a prospective female
blood donor:
- age: 16
- temperature: 99.0F (37.2C)
- Hct: 36%
- history: tetanus toxoid immunization 1 week previously
How many of the above results excludes this donor from giving blood for a
routine transfusion?
a. none
b. 1
c. 2
d. 3 - -b. 1
(The Hct must be >38%. A donor may be 16 unless state law differs.
Temperature must not exceed 99.5F/37.5C, blood pressure must be <180
mmHg systolic and <100 mmHg diastolic, pulse 50-100 unless an athlete
[which can be lower]. Toxoids and vaccines from synthetic or killed sources
have no deferral.)
- 8) Prior to blood donation, the intended venipuncture site must be cleaned
with a scrub solution of:
,a. hypochlorite
b. isopropyl alcohol
c. 10% acetone
d. PVP iodine complex - -d. PVP iodine complex
(The scrub must use iodine, eg, PVP iodine complex. Donors who are
sensitive to iodine can have the area cleaned with a preparation of 2%
chlorhexidine and 70% isopropyl alcohol.)
- 9) All donors blood testing must include:
a. complete Rh phenotype
b. anti-CMV testing
c. DAT
d. serological test for syphilis - -d. serological test for syphilis
(Testing tor syphilis was the first mandated donor screening test for
infectious disease and is still part of donor screening.)
- 10) During the preparation of Platelet Concentrates from whole blood, the
blood should be:
a. cooled towards 6 C
b. cooled towards 20-24 C
c. warmed to 37 C
d. heated to 57 C - -b. cooled towards 20-24 C
(Platelets are prepared and stored at 20-24 C for optimum function.)
- 12) The western blot is a confirmatory test for:
a. CMV antibody
b. anti-HIV-1
c. HbsAg
d. serum protein abnormality - -b. anti-HIV-1
(Western blot uses purified HIV proteins to confirm reactivity in samples
whose screening test for anti-HIV is positive.)
- 13) The test that is currently used to detect donors who are infected with
the AIDS virus is:
a. anti-HBc
b. anti-HIV-1,2
c. HbsAg
d. ALT - -b. anti-HIV-1,2
(The causative agent for AIDS is the human immunodeficiency virus types 1
and 2.)
, - 14) A commonly used screening method for anti-HIV detection is:
a. latex agglutination
b. RIA
c. TLC
d. ELISA - -d. ELISA
(The enzyme-labeled immunosorbent assay [ELISA] method is a very
sensitive method employed to screen donors for markers of transfusion-
transmitted viruses.)
- 16) A unit of packed cells is split into 2 aliquots under closed sterile
conditions at 8 am. The expiration time for each aliquot is:
a. 4 pm the same day
b. 8 pm the same say
c. 8 am the next morning
d. the original date of the unsplit unit - -d. the original date of the unsplit
unit
(Sterile docking devices allow entry into donor units without affecting the
expiration date of the product.)
- 18) When platelets are stored on a rotator set on an open bench top, the
ambient air temps. must be recorded:
a. once a day
b. twice a day
c. every 4 hours
d. every hour - -c. every 4 hours
(If storage devices do not have automated temperature recording,
temperature must he manually monitored every 4 hours.)
- 19) Which of the following is the correct storage temp for the component
listed:
a. Cryo AHF = 4 C
b. FFP = -20 C
c. Frozen RBC = -40 C
d. Platelets = 37 C - -b. FFP = -20 C
(Fresh Frozen Plasma is stored at -18 C or below for 12 months.)
- 20) A unit of RBCs is issued at 9 am and at 9:10 am it is returned to the
blood bank. the container has NOT been entered but the unit has NOT been
refrigerated during this time span. the best course of action for the tech is
to:
a. culture the unit for bacteria
b. discard the unit if not used within 24 hrs.
, c. store the unit at room temp
d. record the return and place the unit back into inventory - -d. record the
return and place the unit back into inventory
(Blood may be returned to the blood bank after issue provided that 1] the
container has not been entered, 2] at least 1 sealed segment is attached to
the container, 3] visual inspection of the unit is satisfactory and documented,
and 4] the unit has been maintained at the appropriate storage or transport
temperature. Studies have shown that refrigerated components retain an
acceptable temperature of <10 C for up to 30 minutes after removal from
the refrigerator.)
- 22) Optimum storage temperature for RBCs:
a. -80 C
b. -20 C
c. -12 C
d. 4 C - -d. 4 C
(Red Blood Cells are stored at 1-6C.)
- 23) If the seal is entered on a unit of RBCs stored at 1 C to 6 C, what is the
maximum allowable storage period in hours?
a. 6
b. 24
c. 48
d. 72 - -b. 24
(If the seal is broken during processing, components are considered to be
prepared in an open system, rather than a dosed system. The expiration
time for Red Blood Cells in an open system is 24 hours)
- 24) Optimum storage for Cryo AHF is:
a. -20 C
b. -12 C
c. 4 C
d. 22 C - -a. -20 C
(Cryoprecipitated AHF is stored at -18C or lower.)
- 25) Cryo AHF must be transfused within what period of time following
thawing and pooling?
a. 4 hrs.
b. 8 hrs.
c. 12 hrs.
d. 24 hrs. - -a. 4 hrs.
and Answers
1) The minimum Hgb concentration in a fingerstick from a male blood donor
is:
a. 12.0 g/dL (120 g/L)
b. 12.5 g/dL (125 g/L)
c. 13.5 g/dL (135 g/L)
d. 15.0 g/dL (150 g/L) - -b. 12.5 g/dL (125 g/L)
(All donors, regardless of sex, require a minimum hemoglobin of 12.5 g/dL
[125 g/L]. The value must not be performed on an earlobe stick.)
- 4) Which of the following constitutes permanent rejection status of a
donor?
a. a tattoo 5 months ago
b. recent close contact with a patient with viral hepatitis
c. 2 units of blood transfused 4 months previously
d. confirmed positive test for HbsAg 10 yrs. earlier - -d. confirmed positive
test for HbsAg 10 yrs. earlier
(A positive test for HbsAg at any time is an indefinite deferral.)
- 6) Below are the results of the history obtained from a prospective female
blood donor:
- age: 16
- temperature: 99.0F (37.2C)
- Hct: 36%
- history: tetanus toxoid immunization 1 week previously
How many of the above results excludes this donor from giving blood for a
routine transfusion?
a. none
b. 1
c. 2
d. 3 - -b. 1
(The Hct must be >38%. A donor may be 16 unless state law differs.
Temperature must not exceed 99.5F/37.5C, blood pressure must be <180
mmHg systolic and <100 mmHg diastolic, pulse 50-100 unless an athlete
[which can be lower]. Toxoids and vaccines from synthetic or killed sources
have no deferral.)
- 8) Prior to blood donation, the intended venipuncture site must be cleaned
with a scrub solution of:
,a. hypochlorite
b. isopropyl alcohol
c. 10% acetone
d. PVP iodine complex - -d. PVP iodine complex
(The scrub must use iodine, eg, PVP iodine complex. Donors who are
sensitive to iodine can have the area cleaned with a preparation of 2%
chlorhexidine and 70% isopropyl alcohol.)
- 9) All donors blood testing must include:
a. complete Rh phenotype
b. anti-CMV testing
c. DAT
d. serological test for syphilis - -d. serological test for syphilis
(Testing tor syphilis was the first mandated donor screening test for
infectious disease and is still part of donor screening.)
- 10) During the preparation of Platelet Concentrates from whole blood, the
blood should be:
a. cooled towards 6 C
b. cooled towards 20-24 C
c. warmed to 37 C
d. heated to 57 C - -b. cooled towards 20-24 C
(Platelets are prepared and stored at 20-24 C for optimum function.)
- 12) The western blot is a confirmatory test for:
a. CMV antibody
b. anti-HIV-1
c. HbsAg
d. serum protein abnormality - -b. anti-HIV-1
(Western blot uses purified HIV proteins to confirm reactivity in samples
whose screening test for anti-HIV is positive.)
- 13) The test that is currently used to detect donors who are infected with
the AIDS virus is:
a. anti-HBc
b. anti-HIV-1,2
c. HbsAg
d. ALT - -b. anti-HIV-1,2
(The causative agent for AIDS is the human immunodeficiency virus types 1
and 2.)
, - 14) A commonly used screening method for anti-HIV detection is:
a. latex agglutination
b. RIA
c. TLC
d. ELISA - -d. ELISA
(The enzyme-labeled immunosorbent assay [ELISA] method is a very
sensitive method employed to screen donors for markers of transfusion-
transmitted viruses.)
- 16) A unit of packed cells is split into 2 aliquots under closed sterile
conditions at 8 am. The expiration time for each aliquot is:
a. 4 pm the same day
b. 8 pm the same say
c. 8 am the next morning
d. the original date of the unsplit unit - -d. the original date of the unsplit
unit
(Sterile docking devices allow entry into donor units without affecting the
expiration date of the product.)
- 18) When platelets are stored on a rotator set on an open bench top, the
ambient air temps. must be recorded:
a. once a day
b. twice a day
c. every 4 hours
d. every hour - -c. every 4 hours
(If storage devices do not have automated temperature recording,
temperature must he manually monitored every 4 hours.)
- 19) Which of the following is the correct storage temp for the component
listed:
a. Cryo AHF = 4 C
b. FFP = -20 C
c. Frozen RBC = -40 C
d. Platelets = 37 C - -b. FFP = -20 C
(Fresh Frozen Plasma is stored at -18 C or below for 12 months.)
- 20) A unit of RBCs is issued at 9 am and at 9:10 am it is returned to the
blood bank. the container has NOT been entered but the unit has NOT been
refrigerated during this time span. the best course of action for the tech is
to:
a. culture the unit for bacteria
b. discard the unit if not used within 24 hrs.
, c. store the unit at room temp
d. record the return and place the unit back into inventory - -d. record the
return and place the unit back into inventory
(Blood may be returned to the blood bank after issue provided that 1] the
container has not been entered, 2] at least 1 sealed segment is attached to
the container, 3] visual inspection of the unit is satisfactory and documented,
and 4] the unit has been maintained at the appropriate storage or transport
temperature. Studies have shown that refrigerated components retain an
acceptable temperature of <10 C for up to 30 minutes after removal from
the refrigerator.)
- 22) Optimum storage temperature for RBCs:
a. -80 C
b. -20 C
c. -12 C
d. 4 C - -d. 4 C
(Red Blood Cells are stored at 1-6C.)
- 23) If the seal is entered on a unit of RBCs stored at 1 C to 6 C, what is the
maximum allowable storage period in hours?
a. 6
b. 24
c. 48
d. 72 - -b. 24
(If the seal is broken during processing, components are considered to be
prepared in an open system, rather than a dosed system. The expiration
time for Red Blood Cells in an open system is 24 hours)
- 24) Optimum storage for Cryo AHF is:
a. -20 C
b. -12 C
c. 4 C
d. 22 C - -a. -20 C
(Cryoprecipitated AHF is stored at -18C or lower.)
- 25) Cryo AHF must be transfused within what period of time following
thawing and pooling?
a. 4 hrs.
b. 8 hrs.
c. 12 hrs.
d. 24 hrs. - -a. 4 hrs.
