Urinalysis Exam – Questions With Reliable
Solutions
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Terms in this set (62)
define specific gravity -ratio of the weight of a volume of urine to the
weight of the same volume of distilled water at a
constant temperature (related to density)
-ratio of the density of a fluid compared to the
density of water
why is a first-voided morning urine -it is a normal concentrated specimen (abnormal
specimen best for performing constituents that may be present have not been
urinalysis? voided out)
what is the average daily output of 1200-1500 ml
urine?
what may cause positive protein alkaline urine overrides the acid buffer of protein
results in specimens with a pH of 9 or pad, will show falsely elevated protein. recheck
more, and how should these positive protein values with pH > 9 by SSA
specimens be treated? (turbidometric) method
what type of protein are the urine test albumin
strips most sensitive to?
which ketones do the urine test strips acetoacetic acid and and acetone (if glycine is
detect? present)
which ketone does the urine test strips beta hydoxybutyric acid
not detect?
, how can you distinguish intact RBCs -intact RBCs = green spots
from free hemoglobin or myoglobin -free hgb/ myoglobin = uniform green color
on the blood test pad of the urine test
strip?
what is a Bence-Jones protein and low molecular weight proteins excreted in the urine
how does it differ from other urinary of more than 1/2 of the patients with multiple
proteins? myeloma. they coagulate when heated to 45-60
degrees but will re-dissolve at the boiling point. ID
by electrophoresis
True of False: small amounts of True
glucose are normally excreted by the
kidney
what may cause FALSE negative ascorbic acid (mega doses of vitamin C)
glucose results on the urine test
strips?
the IRIS specific gravity results are the IRIS corrects for the presence of glucose or
lower than the refractometer SG protein detected by strip- it will correct down the SG
results. what could account for this? result, the refractometer does not automatically
correct (operator can make a manual correction if
needed), they both use the same refractometer
methodology- refraction of light through a liquid
which is related to particle content and in turn
related to density of a liquid
Solutions
Save
Terms in this set (62)
define specific gravity -ratio of the weight of a volume of urine to the
weight of the same volume of distilled water at a
constant temperature (related to density)
-ratio of the density of a fluid compared to the
density of water
why is a first-voided morning urine -it is a normal concentrated specimen (abnormal
specimen best for performing constituents that may be present have not been
urinalysis? voided out)
what is the average daily output of 1200-1500 ml
urine?
what may cause positive protein alkaline urine overrides the acid buffer of protein
results in specimens with a pH of 9 or pad, will show falsely elevated protein. recheck
more, and how should these positive protein values with pH > 9 by SSA
specimens be treated? (turbidometric) method
what type of protein are the urine test albumin
strips most sensitive to?
which ketones do the urine test strips acetoacetic acid and and acetone (if glycine is
detect? present)
which ketone does the urine test strips beta hydoxybutyric acid
not detect?
, how can you distinguish intact RBCs -intact RBCs = green spots
from free hemoglobin or myoglobin -free hgb/ myoglobin = uniform green color
on the blood test pad of the urine test
strip?
what is a Bence-Jones protein and low molecular weight proteins excreted in the urine
how does it differ from other urinary of more than 1/2 of the patients with multiple
proteins? myeloma. they coagulate when heated to 45-60
degrees but will re-dissolve at the boiling point. ID
by electrophoresis
True of False: small amounts of True
glucose are normally excreted by the
kidney
what may cause FALSE negative ascorbic acid (mega doses of vitamin C)
glucose results on the urine test
strips?
the IRIS specific gravity results are the IRIS corrects for the presence of glucose or
lower than the refractometer SG protein detected by strip- it will correct down the SG
results. what could account for this? result, the refractometer does not automatically
correct (operator can make a manual correction if
needed), they both use the same refractometer
methodology- refraction of light through a liquid
which is related to particle content and in turn
related to density of a liquid
