BOC Blood Bank Exam Questions With Correct Answers
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Course
BOC Blood Bank
Institution
BOC Blood Bank
BOC Blood Bank Exam Questions With
Correct 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) - answerb. 12.5 g/dL (125 g/L)
(All donors, regardless of sex, require ...
(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 - answer✔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?
(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 - answer✔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 - answer✔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
(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 - answer✔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 - answer✔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 - answer✔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:
d. the original date of the unsplit unit - answer✔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 - answer✔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 - answer✔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
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