ASCP urinalysis & body fluids Exam | Questions Solved 100%
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Course
ASCP
Institution
ASCP
The following test results were obtained on a urine specimen at 8:00am
Test Result
ph 5.5
Protein 2+
Glucose 3+
Ketones 3+
Blood Negative
Bilirubin Positive
Nitrite Positive
ASCP urinalysis & body fluids Exam |
Questions Solved 100%
The following test results were obtained on a urine specimen at 8:00am
Test Result
ph 5.5
Protein 2+
Glucose 3+
Ketones 3+
Blood Negative
Bilirubin Positive
Nitrite Positive
If this urine specimen was stored uncapped at 5°C with out preservation and retested at
2:00pm, which of the following test results would be changed due to these storage conditions -
ANSWER Ketones
What would be affected by allowing a urine specimen to remain at room temperature for 3
hours before analysis - ANSWER pH
The creatinine clearance is reported in - ANSWER ml/min
,What can give a false negative urine protein reading - ANSWER Very dilute urine
eGFR calculated by the MDRD-IDMS traceable study equation takes into account the patients
age, race, gender, and serum concentration of which - ANSWER Creatinine
A 24-hour urine from a man who had no evidence of kidney impairment was sent to the
laboratory for hormone determination. The volume was 600mL, but there was some question
as to the completeness of the 24-hour collection. The next step would be - ANSWER Check
the creatinine level; if it is >1 g, do the procedure
The ph of a urine specimen measures the - ANSWER free hydrogen ions
Upon standing at room temperature, a urine pH typically - ANSWER increases
Urine reagent test strips should be stored in - ANSWER Cool dry area
Principle of the reagent test strip for urine protein depends on - ANSWER Protein error
of indicators
The protein section of the urine reagent strip is most sensitive to - ANSWER albumin
Routine screening of urine samples for glycosuria is performed primarily to detect - ANSWER
glucose
What reagent is used to react with ketones in the urine - ANSWER sodium nitroprusside
A test pad of a urine reagent strip is impregnated with only sodium nitroprusside. This pad
will react with - ANSWER Acetoacetic (diacetic) acid
,A reagent test strip pad impregnated with stabilized, diazotized 2,4-dichloroaniline will yield a
positive reaction with - ANSWER Bilirubin
What substance may interfere with the reagent test strip pad for leukocyte esterase and yield
a false negative result - ANSWER Protein >500 mg/dL
Excess urine on the reagent test strip can turn a normal pH result into a falsely acidic pH
when which of the following reagents runs into the pH pad. - ANSWER Citrate buffer
When employing the urine reagent strip method, a false-positive protein result may occur in
the presence of: - ANSWER highly alkaline urine
A 17-year-old girl decided to go on a starvation diet. After 1 week of starving herself,
what substance would most likely be found in her urine - ANSWER Ketones
A 2-year-old child had a positive urine ketones. This would most likely be caused by - ANSWER
Vomiting
A patient's urinalysis revealed a positive bilirubin and a decreased urobilinogen level.
these results are associated with - ANSWER biliary obstruction
A urine specimen with an elevated urobilinogen and a negative bilirubin May indicate -
ANSWER hemolytic jaundice
Microscopic analysis of a urine specimen yields a moderate amount of red blood cells in spite of
a negative result for occult blood using a reagent strip. The laboratory should determine if this
patient has taken - ANSWER Vitamin C
Ascorbic acid test inhibits reactions that use peroxidase
The principle of the reagent strip test for microalbuminuria is - ANSWER An immuno chemical
reaction
, The reason then Albumin:creatinine ratio can be performed on a random specimen is - ANSWER
Creatinine corrects for over or under body hydration
To prepare the reagent using confirmatory protein testing, a laboratory would -
ANSWER Dissolve 3 g sulfosalicylic acid in 100 mL of water
A positive result for Bilirubin on a reagent test strip should be followed up by -
ANSWER Performing an ictotest
A clear, red brown urine specimen resulted in a positive reaction for blood on the reagent test
strip, but no RBCs were seen on microscopic examination these results most likely indicate
the presence of - ANSWER Myoglobin
A urine tested with Clinitest exhibits a pass-through reaction and is diluted by adding two drops
of urine to 10 drops of water. This is a dilution of - ANSWER 1:6
When two drops of urine are added to 10 drops of water it is a 2/12proportion and 12 is
the total volume this is the same as a 1:6 dilution
While performing a routine urinalysis, the laboratory notes a 2+ protein results. They should -
ANSWER Confirm with the acid precipitation test
The confirmatory test for positive protein result by the reagent strip method uses - ANSWER
sulfosalicylic acid
A urine specimen is analyzed for Glucose by a glucose oxidase reagent test strip and a copper
reduction test. If both results are positive, which of the following interpretations is correct -
ANSWER Glucose is present
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