MLT 205 U4 Review Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
Specimens for O & P must be 1 hour
examined within ____ of collection
or
preserved appropriately.
What parts of parasites does Eggs, cysts, and larvae
formalin preserve?
What parts of parasites does PVA Cysts and trophs
preserve?
Why should stool specimens not Causes trophs to lose motility and/or lyse
contain water from urine or toilet?
What are cysts? Immotile stage protected by cyst wall,
resulting
from unfavorable conditions.
What are trophozoites? Motile stage that feeds, multiplies, and
maintains
colony within the host
What are Charcot Leyden Breakdown product of eosinophils
crystals?
, What is the main purpose of the Preserves troph motility
saline direct smear in the direct
exam?
What type of stain should be done Direct, concentrate, permanent stain
on formed stool?
What type of stain should be done Direct, concentrate, permanent stain
on soft stool?
What type of stain should be done Direct, permanent stain
on liquid stool?
What reagent is used for the Zinc sulfate
flotation
method of concentration?
Why should stool specimens be May indicate ulceration of intestine due to
examined for blood and mucous? attachment/invasion of parasites
Where are trophs more likely to be Watery stool
found?
What is the specific gravity of the 1.18
flotation reagent for fresh stool
samples?
What is the most commonly used Wheatley's trichrome
permanent stain for parasites?
Answers with Verified Solutions | Latest
Updated 2026
Specimens for O & P must be 1 hour
examined within ____ of collection
or
preserved appropriately.
What parts of parasites does Eggs, cysts, and larvae
formalin preserve?
What parts of parasites does PVA Cysts and trophs
preserve?
Why should stool specimens not Causes trophs to lose motility and/or lyse
contain water from urine or toilet?
What are cysts? Immotile stage protected by cyst wall,
resulting
from unfavorable conditions.
What are trophozoites? Motile stage that feeds, multiplies, and
maintains
colony within the host
What are Charcot Leyden Breakdown product of eosinophils
crystals?
, What is the main purpose of the Preserves troph motility
saline direct smear in the direct
exam?
What type of stain should be done Direct, concentrate, permanent stain
on formed stool?
What type of stain should be done Direct, concentrate, permanent stain
on soft stool?
What type of stain should be done Direct, permanent stain
on liquid stool?
What reagent is used for the Zinc sulfate
flotation
method of concentration?
Why should stool specimens be May indicate ulceration of intestine due to
examined for blood and mucous? attachment/invasion of parasites
Where are trophs more likely to be Watery stool
found?
What is the specific gravity of the 1.18
flotation reagent for fresh stool
samples?
What is the most commonly used Wheatley's trichrome
permanent stain for parasites?
