Intro Flashcards
Which of the following conditions will the stool
specimen be rejected for processing
I. A watery toll collected at 5AM and submitted for analysis at 6:15 AM
II. Stool specimen collected 3 days after barium intake
III. Specimen is collected in a clean wide mouth container but diagnosis is not indicated
IV. There is a small amount of urine inside the container
IV. There is a small amount of urine inside
the container
CIndy received a stool sample placed inside a reused
antibiotic canister with cotton buds inside. She asked
the person who bought it how it was collected. The
person told her that the stool collected was from the
baby’s diaper and placed in the clean bottle. The
sample was delivered within 30 mins. Will the spx be
acceptable? Why or why not?
a. NO the sample was improperly collected
b. No, because of the delayed transport
c. Yes because …
d. Yes because it is …
a. NO the sample was improperly collected
A patient passed her specimen at 6:30 AM. She was complaining of abdominal aches and frequency of defecation for the past 2 days. For the meantime, the
medical technologist placed the specimen container
near the window under direct sunlight. Upon checking
the specimen container, the medical technologist
noticed the time of collection was 5:00 AM and
specimen consistency is watery. During the
examination of fecal specimen both NSS/lodine
mounts yielded negative results. What might have
caused the negative result?
a. The specimen was deemed unsuitable because the of the time of collection to processing
b. The medtech was negligent from the start
c. The specimen was improperly collected by
the patient
d. The specimen was placed under direct
sunlight
b. The medtech was negligent from the start
Which of the ff factors causes the yellow color of stool
a. Bile pigments
b. Milk diet
c. Mucus
d. Undigested Foods
a. Bile pigments
Which of the following form and consistency of stool is
indicative of prolonged constipation
a. Flattened-ribbon like stool
b. Hard stool
c. Round, scybalous stool
d. Soft, well formed stool
a. Flattened-ribbon like stool
Responsible for the characteristic odor of the stool
a. Urobilin and bilirubin
b. Stercobilin
c. Ammonia
d. Indole and skatole
d. Indole and skatole
From which portion of the stool should you get the
sample to prepare a fecal smear
a. Mucoid and bloody portions
b. Inside portion
c. Various parts on the surface
d. All of the above
d. All of the above
What is the purpose of malachite green in Kato Thick
smear preparation
a. For better visualization of protozoan cyst
b. Serves as a clearing agent
c. Stains background
d. Stains protozoans and helminths
c. Stains background
Why do you have to prepare fecal smear using
Lugol’s Iodine solution side by side with NSS
a. The procedure calls for it
b. To duplicate the smears
c. To enhance visibility of parasites
d. To recover parasites as soon as possible
c. To enhance visibility of parasites
How would you know that the wet mount or direct
fecal smear you prepared is a good one?
a. The print of the paper under it is barely
visible through it, with few bubbles, &
overflowing.
b. The print of the paper under it is barely
visible through it, has no bubbles, & not
overflowing.
c. The print of the paper under it is clearly
visible through it, has no bubble & not
overflowing
d. The print of the paper under…
b. The print of the paper under it is barely
visible through it, has no bubbles, & not
overflowing.
A MLS student is having a hard time viewing the
Kato-Thick smear that he had prepared. He made
sure that the thickness passes tha standard by
checking onto the newsprint and directly examined it.
He then describes the field as full of debris obscuring
probable organism in the specimen. What might have
the student done that lead such?
a. He/She used too much fecal specimen
b. He/She did not allow the smear to settle for 30mins to 1 hr
c. He/She did not spread the smear thinly enough
d. He/She just do not know how to perform the procedure
b. He/She did not allow the smear to settle for 30mins to 1 hr
A mushy stool sample was received by the Laboratory
staff around 8 AM and was processed right away. The
Laboratory staff prepared a NSS wet mount smear
and a Kato Thick smear. Under the Kato Thick no
Helminth ova were noted but in the NSS smear,
indiscriminate structure resembling yeast cells yet
with some internal structures were observed. How will
the staff manage the situation?
a. He/She will just disregard those structures
and release result as negative for parasites
b. He/She would repeat the preparation with
Kato-Thick and NSS smear
c. He/She would repeat the preparation with
Iodine and NSS smear
d. He/She would talk to the patient on proper
specimen collection
c. He/She would repeat the preparation with Iodine and NSS smear
Symbiosis is the association of two living organisms
with different species, while mutualism is the
association of two different species that is beneficial
to both
a. First statement is true, second statement is
false
b. First statement is false, second statement is
true
c. Both statements are true
d. Both statements are false
c. Both statements are true
All of the following are considered fixatives of stool
except
a. Buffered glycerol
b. 10% HCHO
c. Modified PVA
d. SAF
a. Buffered glycerol
Lugol’s iodine should be stored in screw capped
amber bottles to prevent
a. Contamination with microorganisms
b. Deterioration
c. Toxicity
d. Evaporation
b. Deterioration
What is the ideal temperature at which to hold a fecal
specimen for more than 1 hour
a. Room temp
b. Refrigerator Temperature
c. Freezer temperature
d. Incubator
b. Refrigerator Temperature
