Urinalysis Exam 2025- 2026
Latest Upated Questions With
Completed & Verified Solutions
What time frame can we run a urinalysis within? - CORRECT ANSWER-fresh
urine should be evaluated within 2-4 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 urinalysis? - CORRECT ANSWER-renal function
values
protein concentrations
metabolic functions
What is a "complete urinalysis"? - CORRECT ANSWER-the evaluation of the
physical (color, clarity and specific gravity), chemical, and formed element
characteristics of urine
,What are the two preferred methods for urine collection? - CORRECT ANSWER-
cystocentesis
catheterization
What are the two less useful methods of urine collection? - CORRECT ANSWER-
free-catch
bladder expression
What should we keep in mind if the only way to get a sample is to do a free catch?
- CORRECT ANSWER-midstream to decrease contamination
What kind of abnormalities do we need a NON free catch for? - CORRECT
ANSWER-We need to obtain cysto or catheterized samples for problems related
to disease in the kidneys or urinary bladder
What are some problems with bladder expression? - CORRECT ANSWER-
possibility of rupturing the bladder if excessive pressure is used or if the bladder
wall is compromised.
When should we get a urinalysis ideally? - CORRECT ANSWER-A first morning
sample will provide the best evaluation concentrating ability
What is the best time to get a u/a to evaluate urine for casts? - CORRECT
ANSWER-first stream of the morning
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
,Why do we do the u/a ASAP after collecting the sample? - CORRECT ANSWER-
because cellular element and crystals can deteriorate, making it difficult to
recognize them correctly. Plus, crystals can dissolve over time.
How long can we postpone running a urinalysis? - CORRECT ANSWER-a sample
can be refrigerated for 6 hours - NO LONGER.
What do we have to remember about a sample if it has been refrigerated? -
CORRECT ANSWER-Sample needs to return to room temperature before
running any tests on it.
What chemical parameters do we worry about with refrigerated samples? -
CORRECT ANSWER-Several indicator pads on reagent strips are enzyme-based
runs, and the speed of rxn decreases as the temperature decreased - therefore
causing false-negatives/positives
There should be a urinalysis record-keeping systems which includes::: - CORRECT
ANSWER-when the sample was obtained
how the sample was obtained
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 u/a? - CORRECT ANSWER-If the reagent
strips are handled and stored properly, and not used past their expiration date,
controls do NOT need to be performed
What are the common sources for error in urinalysis? - CORRECT ANSWER-
Errors are primarily pre-analytical (due to inappropriate collection) and analytical
What is the most common pre-analytical error? - CORRECT ANSWER-
contamination of urine during sample collection
What should we know about cleaning products and urine samples? - CORRECT
ANSWER-cleaning products/solvents can alter the chemical rxns on a reagent
strip. -- wouldnt be able to do a strip on off-the-table sample
What are the common analytical errors? - CORRECT ANSWER-1) Delay in
performing u/a w/o refrigeration
2) Failure to mix sample prior to aliquoting
3) Failure to resuspend the sample
4) Failure to follow SOPs
How long do we centrifuge a urine sample for? - CORRECT ANSWER-we
centrifuge 5-10 mLs of urine for 3-5 minutes at 1000-2000 rpms
What are the parts of a spun down urine sample? - CORRECT ANSWER-
supernatant
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
Latest Upated Questions With
Completed & Verified Solutions
What time frame can we run a urinalysis within? - CORRECT ANSWER-fresh
urine should be evaluated within 2-4 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 urinalysis? - CORRECT ANSWER-renal function
values
protein concentrations
metabolic functions
What is a "complete urinalysis"? - CORRECT ANSWER-the evaluation of the
physical (color, clarity and specific gravity), chemical, and formed element
characteristics of urine
,What are the two preferred methods for urine collection? - CORRECT ANSWER-
cystocentesis
catheterization
What are the two less useful methods of urine collection? - CORRECT ANSWER-
free-catch
bladder expression
What should we keep in mind if the only way to get a sample is to do a free catch?
- CORRECT ANSWER-midstream to decrease contamination
What kind of abnormalities do we need a NON free catch for? - CORRECT
ANSWER-We need to obtain cysto or catheterized samples for problems related
to disease in the kidneys or urinary bladder
What are some problems with bladder expression? - CORRECT ANSWER-
possibility of rupturing the bladder if excessive pressure is used or if the bladder
wall is compromised.
When should we get a urinalysis ideally? - CORRECT ANSWER-A first morning
sample will provide the best evaluation concentrating ability
What is the best time to get a u/a to evaluate urine for casts? - CORRECT
ANSWER-first stream of the morning
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
,Why do we do the u/a ASAP after collecting the sample? - CORRECT ANSWER-
because cellular element and crystals can deteriorate, making it difficult to
recognize them correctly. Plus, crystals can dissolve over time.
How long can we postpone running a urinalysis? - CORRECT ANSWER-a sample
can be refrigerated for 6 hours - NO LONGER.
What do we have to remember about a sample if it has been refrigerated? -
CORRECT ANSWER-Sample needs to return to room temperature before
running any tests on it.
What chemical parameters do we worry about with refrigerated samples? -
CORRECT ANSWER-Several indicator pads on reagent strips are enzyme-based
runs, and the speed of rxn decreases as the temperature decreased - therefore
causing false-negatives/positives
There should be a urinalysis record-keeping systems which includes::: - CORRECT
ANSWER-when the sample was obtained
how the sample was obtained
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 u/a? - CORRECT ANSWER-If the reagent
strips are handled and stored properly, and not used past their expiration date,
controls do NOT need to be performed
What are the common sources for error in urinalysis? - CORRECT ANSWER-
Errors are primarily pre-analytical (due to inappropriate collection) and analytical
What is the most common pre-analytical error? - CORRECT ANSWER-
contamination of urine during sample collection
What should we know about cleaning products and urine samples? - CORRECT
ANSWER-cleaning products/solvents can alter the chemical rxns on a reagent
strip. -- wouldnt be able to do a strip on off-the-table sample
What are the common analytical errors? - CORRECT ANSWER-1) Delay in
performing u/a w/o refrigeration
2) Failure to mix sample prior to aliquoting
3) Failure to resuspend the sample
4) Failure to follow SOPs
How long do we centrifuge a urine sample for? - CORRECT ANSWER-we
centrifuge 5-10 mLs of urine for 3-5 minutes at 1000-2000 rpms
What are the parts of a spun down urine sample? - CORRECT ANSWER-
supernatant
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
