ASCP MLS QUESTIONS AND ANSWERS
100% PASS
What feature is most often found with patients with a splenectomy on a Wright's stained blood
smear? ✔✔Howell-Jolly bodies
Patients with antibody to the following antigen are immune to Hepatitis B: ✔✔Surface antigen
(HbSAg)
Which two of the following tests are helpful for documenting previous Streptococcal throat and
skin infections: ✔✔ASO titer and Anti-DNase B
In mass spectrometry, the "appearance potential" is defined as the: ✔✔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? ✔✔7.2
Coulometry: ✔✔An automated method for measuring chloride which generates silver ions in the
reaction
,Erythroleukemia: ✔✔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 ✔✔Is associated with an increase in myeloid and monocytic cell
precursors, but not red blood cell precursors
Species that are Lysine (+), arginine (=) and ornithine (+): ✔✔Enterobacter aerogenes,
Edwardsiella species and most Serratia species
Lysine reaction for all Citrobacter: ✔✔Negative
Key identifying characteristic for Pantoa (Enterobacter) agglomerans: ✔✔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? ✔✔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 ✔✔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) ✔✔Chediak-
Higashi syndrome (CH), Chronic granulomatous disease (CGD), Myeloperoxidase deficiency
(MPO)
Nephrotic Syndrome: ✔✔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: ✔✔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.
100% PASS
What feature is most often found with patients with a splenectomy on a Wright's stained blood
smear? ✔✔Howell-Jolly bodies
Patients with antibody to the following antigen are immune to Hepatitis B: ✔✔Surface antigen
(HbSAg)
Which two of the following tests are helpful for documenting previous Streptococcal throat and
skin infections: ✔✔ASO titer and Anti-DNase B
In mass spectrometry, the "appearance potential" is defined as the: ✔✔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? ✔✔7.2
Coulometry: ✔✔An automated method for measuring chloride which generates silver ions in the
reaction
,Erythroleukemia: ✔✔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 ✔✔Is associated with an increase in myeloid and monocytic cell
precursors, but not red blood cell precursors
Species that are Lysine (+), arginine (=) and ornithine (+): ✔✔Enterobacter aerogenes,
Edwardsiella species and most Serratia species
Lysine reaction for all Citrobacter: ✔✔Negative
Key identifying characteristic for Pantoa (Enterobacter) agglomerans: ✔✔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? ✔✔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 ✔✔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) ✔✔Chediak-
Higashi syndrome (CH), Chronic granulomatous disease (CGD), Myeloperoxidase deficiency
(MPO)
Nephrotic Syndrome: ✔✔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: ✔✔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.
