CSMLS PRACTICE EXAM 3 QUESTIONS AND
VERIFIED ANSWERS; 100% CORRECT; GRADE A
a 24 hour urine specimen was submitted for chloride and a culture and
sensitivity testing how should the sample be processed?
- reject the C and S test and continue testing for the chloride
- reject the C and S and 24 hour chloride tests
- aliquot for C and S and continue testing for the chloride
- reject the 24 hour chloride test and process the C and S - correct
answer- reject the C and S test and continue testing for the chloride
a dark brown pigment is noted on formalin fixed hematoxylin and eosin
stained section. hat action can prevent this from occurring?
- increase fixation time
- maintain formalin at a neutral pH
- treat sections with alcoholic picric acid
- bread loaf large sections - correct answer- maintain formalin at a
neutral pH
,a tech is testing a patient sample showing gram positive cocci in clusters
using latex agglutination method. what action should be performed next
given the results below?
sample test results
staph aureus QC. visible large clumps
staph epi QC no clumps seen
patient sample. visible large clumps
- repeat the QC
- report isolate as staph aureus
- report isolate as staph epi
- perform tube coagulase - correct answer- report isolate as staph
aureus
a tech of overwhelmed for repeatedly having to leave their lab work to
assist the phlebotomist. Which of the following actions is appropriate?
- request hiring an additional phlebotomist
- request changing the job description
- request a review of work load
- refuse to leave the department - correct answer- request a review
of work load
,an organism grew on MAC incubated in O2 but failed to grow on blood
agar incubated in CO2 what is the most probably cause of this finding?
- the organism prefers aerobic environment
- the organism was not inoculated on blood agar
- the organism requires lactose
- the organism is fastidious - correct answer- the organism was not
inoculated on blood agar
given the following date how many QC results are less than 2 SD?
CV 5%
mean 100.0
1 90.0
2 91.0
3 93.0
4 112.0
5 92.0
-0
, -1
-2
- 3 - correct answer- 0
gram poise cocci and gram negative bacilli were seen in a gram stained
smear who how the following media would be most helpful in isolating
the gram positive organism?
- MAC
- Blood agar
- PEA
- buffered charcoal - yeast extract agar - correct answer- PEA
how much dilute tis required to prepare 450mL of working 2.5 X stock
solution from a 20X stock solution?
- 56.25 mL
- 393.75 mL
- 405.00 mL
- 450.00 mL - correct answer- 393.75 mL
how much glucose (180.16 g/mol) is required to prepare 300 mL of 5%
solution?
VERIFIED ANSWERS; 100% CORRECT; GRADE A
a 24 hour urine specimen was submitted for chloride and a culture and
sensitivity testing how should the sample be processed?
- reject the C and S test and continue testing for the chloride
- reject the C and S and 24 hour chloride tests
- aliquot for C and S and continue testing for the chloride
- reject the 24 hour chloride test and process the C and S - correct
answer- reject the C and S test and continue testing for the chloride
a dark brown pigment is noted on formalin fixed hematoxylin and eosin
stained section. hat action can prevent this from occurring?
- increase fixation time
- maintain formalin at a neutral pH
- treat sections with alcoholic picric acid
- bread loaf large sections - correct answer- maintain formalin at a
neutral pH
,a tech is testing a patient sample showing gram positive cocci in clusters
using latex agglutination method. what action should be performed next
given the results below?
sample test results
staph aureus QC. visible large clumps
staph epi QC no clumps seen
patient sample. visible large clumps
- repeat the QC
- report isolate as staph aureus
- report isolate as staph epi
- perform tube coagulase - correct answer- report isolate as staph
aureus
a tech of overwhelmed for repeatedly having to leave their lab work to
assist the phlebotomist. Which of the following actions is appropriate?
- request hiring an additional phlebotomist
- request changing the job description
- request a review of work load
- refuse to leave the department - correct answer- request a review
of work load
,an organism grew on MAC incubated in O2 but failed to grow on blood
agar incubated in CO2 what is the most probably cause of this finding?
- the organism prefers aerobic environment
- the organism was not inoculated on blood agar
- the organism requires lactose
- the organism is fastidious - correct answer- the organism was not
inoculated on blood agar
given the following date how many QC results are less than 2 SD?
CV 5%
mean 100.0
1 90.0
2 91.0
3 93.0
4 112.0
5 92.0
-0
, -1
-2
- 3 - correct answer- 0
gram poise cocci and gram negative bacilli were seen in a gram stained
smear who how the following media would be most helpful in isolating
the gram positive organism?
- MAC
- Blood agar
- PEA
- buffered charcoal - yeast extract agar - correct answer- PEA
how much dilute tis required to prepare 450mL of working 2.5 X stock
solution from a 20X stock solution?
- 56.25 mL
- 393.75 mL
- 405.00 mL
- 450.00 mL - correct answer- 393.75 mL
how much glucose (180.16 g/mol) is required to prepare 300 mL of 5%
solution?
