ASCP MLS Questions and Answers
Already Passed
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
Already Passed
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
