ASCP MLS ACTUAL PAPER SOLVED
QUESTIONS
◉ Patients with antibody to the following antigen are immune to
Hepatitis B:
Answer: Surface antigen (HbSAg)
◉ Which two of the following tests are helpful for documenting
previous Streptococcal throat and skin infections:
Answer: ASO titer and Anti-DNase B
◉ In mass spectrometry, the "appearance potential" is defined as
the:
Answer: Minimum energy required for the appearance of a
particular fragment ion in mass spectrum
◉ What is generally accepted as the lower threshold value for
semen pH from fertile males?
Answer: 7.2
◉ Coulometry:
Answer: An automated method for measuring chloride which
generates silver ions in the reaction
,◉ Erythroleukemia:
Answer: Also known as Acute Myelogenous Leukemia type M6.
This type is associated with either the presence of both erythroid
and myeloid precursors OR strictly erythroid precursors.
◉ Myelomonocytic leukemia
Answer: Is associated with an increase in myeloid and monocytic
cell precursors, but not red blood cell precursors
◉ Species that are Lysine (+), arginine (=) and ornithine (+):
Answer: Enterobacter aerogenes, Edwardsiella species and most
Serratia species
◉ Lysine reaction for all Citrobacter:
Answer: Negative
◉ Key identifying characteristic for Pantoa (Enterobacter)
agglomerans:
Answer: negative reactions for the three decarboxylases
commonly tested ( Lysine, arginine and ornithine)
◉ Which organism is MOST likely responsible for septic reactions
associated with Red Blood Cell transfusions?
,Answer: Yersina entercolitica is most likely responsible for septic
reactions in transfusions of Red Blood Cells. This organism is
usually acquired by ingestion of contaminated food and causes
mild symptoms of abdominal pain and diarrhea. Growth of Y.
entercolitica is enhanced in iron-rich environments such as red
cell components.
◉ Gaucher's disease
Answer: The most common lysosomal storage disease caused by
insufficient activity of the lysosomal enzyme glucocerebrosidase
that leads to the deposition of glucocerebroside in cells of the
macrophage-monocyte system.
◉ Diseases associated with dysfunctions of polymorphonuclear
neutrophils (PMNs)
Answer: Chediak-Higashi syndrome (CH), Chronic granulomatous
disease (CGD), Myeloperoxidase deficiency (MPO)
◉ Nephrotic Syndrome:
Answer: Caused by damage to the kidneys, especially the
basement membrane of the glomerulus; which causes abnormal
excretion of protein and red blood cells in the urine. Fats are also
present in the urine in most cases. A foamy appearance of the
urine is a key characteristic of this condition.
Clinical symptoms include:
Swelling
, Weight gain from fluid retention
Poor appetite
High blood pressure
◉ Key Biochemical reactions for Enterobacteriaceae:
Answer: The key biochemical reactions by which the family
Enterobacteriaceae can be identified include fermentation of
carbohydrates, reduction of nitrates to nitrites and the absence of
cytochrome oxidase activity.
◉ ANA
Answer: See 2 quiz #27
◉ Prozone effect:
Answer: Results in a false positive reaction; is the result of
antibody excess and dilution of antibody can help prevent its
occurrence
◉ Purpose of a bi-chromatic analyzer with dual wavelengths is:
Answer: Minimize the effect of interference
◉ Key characteristics of Micrococcus:
Answer: Susceptible to bacitracin ("A") and resistant to
furazolidone; gram positive cocci in tetras, bacteria cells of
QUESTIONS
◉ Patients with antibody to the following antigen are immune to
Hepatitis B:
Answer: Surface antigen (HbSAg)
◉ Which two of the following tests are helpful for documenting
previous Streptococcal throat and skin infections:
Answer: ASO titer and Anti-DNase B
◉ In mass spectrometry, the "appearance potential" is defined as
the:
Answer: Minimum energy required for the appearance of a
particular fragment ion in mass spectrum
◉ What is generally accepted as the lower threshold value for
semen pH from fertile males?
Answer: 7.2
◉ Coulometry:
Answer: An automated method for measuring chloride which
generates silver ions in the reaction
,◉ Erythroleukemia:
Answer: Also known as Acute Myelogenous Leukemia type M6.
This type is associated with either the presence of both erythroid
and myeloid precursors OR strictly erythroid precursors.
◉ Myelomonocytic leukemia
Answer: Is associated with an increase in myeloid and monocytic
cell precursors, but not red blood cell precursors
◉ Species that are Lysine (+), arginine (=) and ornithine (+):
Answer: Enterobacter aerogenes, Edwardsiella species and most
Serratia species
◉ Lysine reaction for all Citrobacter:
Answer: Negative
◉ Key identifying characteristic for Pantoa (Enterobacter)
agglomerans:
Answer: negative reactions for the three decarboxylases
commonly tested ( Lysine, arginine and ornithine)
◉ Which organism is MOST likely responsible for septic reactions
associated with Red Blood Cell transfusions?
,Answer: Yersina entercolitica is most likely responsible for septic
reactions in transfusions of Red Blood Cells. This organism is
usually acquired by ingestion of contaminated food and causes
mild symptoms of abdominal pain and diarrhea. Growth of Y.
entercolitica is enhanced in iron-rich environments such as red
cell components.
◉ Gaucher's disease
Answer: The most common lysosomal storage disease caused by
insufficient activity of the lysosomal enzyme glucocerebrosidase
that leads to the deposition of glucocerebroside in cells of the
macrophage-monocyte system.
◉ Diseases associated with dysfunctions of polymorphonuclear
neutrophils (PMNs)
Answer: Chediak-Higashi syndrome (CH), Chronic granulomatous
disease (CGD), Myeloperoxidase deficiency (MPO)
◉ Nephrotic Syndrome:
Answer: Caused by damage to the kidneys, especially the
basement membrane of the glomerulus; which causes abnormal
excretion of protein and red blood cells in the urine. Fats are also
present in the urine in most cases. A foamy appearance of the
urine is a key characteristic of this condition.
Clinical symptoms include:
Swelling
, Weight gain from fluid retention
Poor appetite
High blood pressure
◉ Key Biochemical reactions for Enterobacteriaceae:
Answer: The key biochemical reactions by which the family
Enterobacteriaceae can be identified include fermentation of
carbohydrates, reduction of nitrates to nitrites and the absence of
cytochrome oxidase activity.
◉ ANA
Answer: See 2 quiz #27
◉ Prozone effect:
Answer: Results in a false positive reaction; is the result of
antibody excess and dilution of antibody can help prevent its
occurrence
◉ Purpose of a bi-chromatic analyzer with dual wavelengths is:
Answer: Minimize the effect of interference
◉ Key characteristics of Micrococcus:
Answer: Susceptible to bacitracin ("A") and resistant to
furazolidone; gram positive cocci in tetras, bacteria cells of
