ASCP BOC PRACTICE EXAM EVALUATION
FULL SOLUTION UPDATED STUDY GUIDE
⩥ Cerebrospinal fluid for glucose assay should be: a)
refrigerated b) analyzed immediately c) heated to 56 degree C d)
stored at room temp after centrifugation.
Answer: b) analyzed immediately
⩥ The major crossmatch will detect: a) group A patient
mistyped as group O b) unexpected red cell antibody in the
donor unit c) Rh-neg donor unit mislabeled as Rh-Pos d)
recipient antibody directly against antigens on the donor red
cells.
Answer: d) recipient antibody directly against antigens on the
donor red cells
⩥ The anion gap is useful for quality control of laboratory
reselts for a) amino acids and proteins b) blood gas anaylses c)
sodium, potassium, chloride and total C02 d) calcium,
phosphorus and magnesium.
Answer: c) sodium, potassium, chloride and total C02
,⩥ A common cause of respiratory alkalosis is a) vomitting b)
starvation c) asthma d) hyperventilation.
Answer: d) hyperventilation
⩥ Blood is diluted 1:200, and a platelet count is performed. 180
platelets were counted in the center square millimeter on one
side of the hemacytometer and 186 on the other side/ The total
platelet count is: a) 146 x 10³/μL (146 x 10⁹/L) b)183 x 10³/μL
(183 x 10⁹/L) c)366 x 10³/μL (3666 x 10⁹/L) d)732 x 10³/μL
(732 x 10⁹/L).
Answer: c)366 x 10³/μL (3666 x 10⁹/L)
⩥ When staining acid-fast bacilli with Truant auramine-
rhodamine stain, potassium permanganate is used a a)
decolorizing agent b) quenching agent c) mordant d) dye.
Answer: b) quenching agent
⩥ A first morning sputum is received for culture of acid-fast
bacilli. It is digested and concentrated by the N-acetyl-L-
cysteine alkali method. Two Sabouraud dextrose slants are
incubated in the dark at 35ºC with 5%-10% CO2. The smear
reveal acid-fast bacilli, but the slants show no growth after 8
weeks. The explanation is: a) improper media used b) incorrect
,concentration procedure used c) improper specimen submitted
d) exposure to CO2 prevents growth.
Answer: a) improper media used
⩥ MacConkey media for screening suspected cases of
hemorrhagic E. coli O157:H7 must contain: a) indole b) citrate
c) sorbitol d) lactose.
Answer: c) sorbitol
⩥ A patient with a B-cell deficiency will most likely exhibit: a)
decreased phagocytosis b) increased bacterial infections c)
decreased complement levels d) increased complement levels.
Answer: b) increased bacterial infections
⩥ Communication is enhanced by: a) a planned strategy that
includes listening skills and ensuring an understanding with
questions b) relying on e-mail, memos and voice mail to
communicate new information c) formal, hierachical patterns
instead of informal networking patterns d) assumptions if there
are questions about the intent of the message.
Answer: a) a planned strategy that includes listening skills and
ensuring an understanding with questions
, ⩥ IgM antibodies are frequently hemolytic because of: a)the
dimeric structure b) the molecule's 5 antigen binding sites c)
their sedimentation coefficient of 7-15 S d) their coefficient
ability to fix complement.
Answer: b) the molecule's 5 antigen binding sites
⩥ A community hospital microbiology laboratory is processing
significant numbers of stool cultures because of an outbreak of
diarrhea following heavy rains and flooding in the county. A
media that should be incorporated in the plating protocol is: a)
colistin nalidixic acid for listeria b) MacConckey agar with
sorbitol for Campylobacter c) mannitol salt agar for
Enterococcus speices d) thiosulfate citrate bile salts sucrose for
Vibrio species.
Answer: d) thiosulfate citrate bile salts sucrose for Vibrio
species
⩥ 80 grams of NaOH (MW=40) are how many moles? a) 1 b) 2
c) 3 d) 4.
Answer: b) 2
⩥ An electrode has a silver/silver chloride anode and a platinum
wire cathode. It is suspended in KCl solution and separated fro
the blood to be analyzed by a selectively permeable membrane.
FULL SOLUTION UPDATED STUDY GUIDE
⩥ Cerebrospinal fluid for glucose assay should be: a)
refrigerated b) analyzed immediately c) heated to 56 degree C d)
stored at room temp after centrifugation.
Answer: b) analyzed immediately
⩥ The major crossmatch will detect: a) group A patient
mistyped as group O b) unexpected red cell antibody in the
donor unit c) Rh-neg donor unit mislabeled as Rh-Pos d)
recipient antibody directly against antigens on the donor red
cells.
Answer: d) recipient antibody directly against antigens on the
donor red cells
⩥ The anion gap is useful for quality control of laboratory
reselts for a) amino acids and proteins b) blood gas anaylses c)
sodium, potassium, chloride and total C02 d) calcium,
phosphorus and magnesium.
Answer: c) sodium, potassium, chloride and total C02
,⩥ A common cause of respiratory alkalosis is a) vomitting b)
starvation c) asthma d) hyperventilation.
Answer: d) hyperventilation
⩥ Blood is diluted 1:200, and a platelet count is performed. 180
platelets were counted in the center square millimeter on one
side of the hemacytometer and 186 on the other side/ The total
platelet count is: a) 146 x 10³/μL (146 x 10⁹/L) b)183 x 10³/μL
(183 x 10⁹/L) c)366 x 10³/μL (3666 x 10⁹/L) d)732 x 10³/μL
(732 x 10⁹/L).
Answer: c)366 x 10³/μL (3666 x 10⁹/L)
⩥ When staining acid-fast bacilli with Truant auramine-
rhodamine stain, potassium permanganate is used a a)
decolorizing agent b) quenching agent c) mordant d) dye.
Answer: b) quenching agent
⩥ A first morning sputum is received for culture of acid-fast
bacilli. It is digested and concentrated by the N-acetyl-L-
cysteine alkali method. Two Sabouraud dextrose slants are
incubated in the dark at 35ºC with 5%-10% CO2. The smear
reveal acid-fast bacilli, but the slants show no growth after 8
weeks. The explanation is: a) improper media used b) incorrect
,concentration procedure used c) improper specimen submitted
d) exposure to CO2 prevents growth.
Answer: a) improper media used
⩥ MacConkey media for screening suspected cases of
hemorrhagic E. coli O157:H7 must contain: a) indole b) citrate
c) sorbitol d) lactose.
Answer: c) sorbitol
⩥ A patient with a B-cell deficiency will most likely exhibit: a)
decreased phagocytosis b) increased bacterial infections c)
decreased complement levels d) increased complement levels.
Answer: b) increased bacterial infections
⩥ Communication is enhanced by: a) a planned strategy that
includes listening skills and ensuring an understanding with
questions b) relying on e-mail, memos and voice mail to
communicate new information c) formal, hierachical patterns
instead of informal networking patterns d) assumptions if there
are questions about the intent of the message.
Answer: a) a planned strategy that includes listening skills and
ensuring an understanding with questions
, ⩥ IgM antibodies are frequently hemolytic because of: a)the
dimeric structure b) the molecule's 5 antigen binding sites c)
their sedimentation coefficient of 7-15 S d) their coefficient
ability to fix complement.
Answer: b) the molecule's 5 antigen binding sites
⩥ A community hospital microbiology laboratory is processing
significant numbers of stool cultures because of an outbreak of
diarrhea following heavy rains and flooding in the county. A
media that should be incorporated in the plating protocol is: a)
colistin nalidixic acid for listeria b) MacConckey agar with
sorbitol for Campylobacter c) mannitol salt agar for
Enterococcus speices d) thiosulfate citrate bile salts sucrose for
Vibrio species.
Answer: d) thiosulfate citrate bile salts sucrose for Vibrio
species
⩥ 80 grams of NaOH (MW=40) are how many moles? a) 1 b) 2
c) 3 d) 4.
Answer: b) 2
⩥ An electrode has a silver/silver chloride anode and a platinum
wire cathode. It is suspended in KCl solution and separated fro
the blood to be analyzed by a selectively permeable membrane.
