MLS (Medical Laboratory Scientist) ASCP Exam
2026/2027 Newest exam with Verified Questions And
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The incidence fo hemolytic disease of the fetus and
newborn due to anti-D would be expected to be rarest in
which population? - ANSWER-Asians
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.
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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)
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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
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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.