ASCP BOC EXAM STUDY GUIDE FROM
THE MOBILE APP QUESTIONS AND
ANSWERS WITH SOLUTIONS 2024
When using an electronic cell counter, which of the following results can occur in the presence of a cold
agglutination? a) increased MCV and decreased RBC b) increased MCV and normal RBC c) decreased
MCV and increased MCHC d) decreased MCV and RBC - ANSWER a) increased MCV and decreased RBC
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. Such an
electrode is used to measure which of the following? a) pH b) PCO2 c) PO2 d) HCO2 - ANSWER c) PO2
THE MOBILE APP QUESTIONS AND
ANSWERS WITH SOLUTIONS 2024
When using an electronic cell counter, which of the following results can occur in the presence of a cold
agglutination? a) increased MCV and decreased RBC b) increased MCV and normal RBC c) decreased
MCV and increased MCHC d) decreased MCV and RBC - ANSWER a) increased MCV and decreased RBC
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. Such an
electrode is used to measure which of the following? a) pH b) PCO2 c) PO2 d) HCO2 - ANSWER c) PO2
