Urinalysis Exam Questions and Answers with
Verified Solutions | Latest Updated 2026
What time frame can we run a fresh urine should be evaluated within 2-4
urinalysis within? hours of
collection for the most valid results.
Ms. D says that we need to run it within the
first 30
minutes...
What can we evaluate with the renal function values
urinalysis? protein concentrations
metabolic functions
What is a "complete urinalysis"? the evaluation of the physical (color, clarity
and
specific gravity), chemical, and formed
element
characteristics of urine
What are the two preferred cystocentesis
methods catheterization
for urine collection?
What are the two less useful free-catch
methods of urine collection? bladder expression
,What should we keep in mind if midstream to decrease contamination
the
only way to get a sample is to do a
free catch?
What kind of abnormalities do we We need to obtain cysto or catheterized
need a NON free catch for? samples
for problems related to disease in the
kidneys or
urinary bladder
What are some problems with possibility of rupturing the bladder if
bladder expression? excessive
pressure is used or if the bladder wall is
compromised.
When should we get a urinalysis A first morning sample will provide the best
ideally? evaluation concentrating ability
What is the best time to get a u/a first stream of the morning
to
evaluate urine for casts?
Why do we do the u/a ASAP after because cellular element and crystals can
collecting the sample? deteriorate, making it difficult to recognize
them
correctly. Plus, crystals can dissolve over
time.
How long can we postpone a sample can be refrigerated for 6 hours -
running NO
a urinalysis? LONGER.
, What do we have to remember Sample needs to return to room
about a sample if it has been temperature
refrigerated? before running any tests on it.
What chemical parameters do we Several indicator pads on reagent strips
worry about with refrigerated are
samples? enzyme-based runs, and the speed of rxn
decreases as the temperature decreased -
therefore causing false-negatives/positives
There should be a urinalysis when the sample was obtained
record- how the sample was obtained
keeping systems which includes::: any medication giver prior to the u/a
when the u/a was performed
patient name
owner and hospital ID number
Do we need to run controls for a If the reagent strips are handled and
u/a? stored
properly, and not used past their expiration
date,
controls do NOT need to be performed
What are the common sources for Errors are primarily pre-analytical (due to
error in urinalysis? inappropriate collection) and analytical
What is the most common pre- contamination of urine during sample
analytical error? collection
Verified Solutions | Latest Updated 2026
What time frame can we run a fresh urine should be evaluated within 2-4
urinalysis within? hours of
collection for the most valid results.
Ms. D says that we need to run it within the
first 30
minutes...
What can we evaluate with the renal function values
urinalysis? protein concentrations
metabolic functions
What is a "complete urinalysis"? the evaluation of the physical (color, clarity
and
specific gravity), chemical, and formed
element
characteristics of urine
What are the two preferred cystocentesis
methods catheterization
for urine collection?
What are the two less useful free-catch
methods of urine collection? bladder expression
,What should we keep in mind if midstream to decrease contamination
the
only way to get a sample is to do a
free catch?
What kind of abnormalities do we We need to obtain cysto or catheterized
need a NON free catch for? samples
for problems related to disease in the
kidneys or
urinary bladder
What are some problems with possibility of rupturing the bladder if
bladder expression? excessive
pressure is used or if the bladder wall is
compromised.
When should we get a urinalysis A first morning sample will provide the best
ideally? evaluation concentrating ability
What is the best time to get a u/a first stream of the morning
to
evaluate urine for casts?
Why do we do the u/a ASAP after because cellular element and crystals can
collecting the sample? deteriorate, making it difficult to recognize
them
correctly. Plus, crystals can dissolve over
time.
How long can we postpone a sample can be refrigerated for 6 hours -
running NO
a urinalysis? LONGER.
, What do we have to remember Sample needs to return to room
about a sample if it has been temperature
refrigerated? before running any tests on it.
What chemical parameters do we Several indicator pads on reagent strips
worry about with refrigerated are
samples? enzyme-based runs, and the speed of rxn
decreases as the temperature decreased -
therefore causing false-negatives/positives
There should be a urinalysis when the sample was obtained
record- how the sample was obtained
keeping systems which includes::: any medication giver prior to the u/a
when the u/a was performed
patient name
owner and hospital ID number
Do we need to run controls for a If the reagent strips are handled and
u/a? stored
properly, and not used past their expiration
date,
controls do NOT need to be performed
What are the common sources for Errors are primarily pre-analytical (due to
error in urinalysis? inappropriate collection) and analytical
What is the most common pre- contamination of urine during sample
analytical error? collection
