ASCP Urinalysis and Body Fluids Exam Study Terms and Questions with Correct Verified Answers
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Course
ASCP
Institution
ASCP
A urine specimen collected on an apparently healthy 25 year old man shortly after he finished
eating lunch was cloudy but showed normal results on a multiple reagent strip analysis. The
most likely cause of the turbidity is - ANSWER phosphates
In which of the following metabolic diseases will ur...
ASCP Urinalysis and Body Fluids Exam
Study Terms and Questions with Correct
Verified Answers
A urine specimen collected on an apparently healthy 25 year old man shortly after he finished
eating lunch was cloudy but showed normal results on a multiple reagent strip analysis. The
most likely cause of the turbidity is - ANSWER phosphates
In which of the following metabolic diseases will urine turn dark brown to black upon standing -
ANSWER alkaptonuria
Urine osmolality is related to - ANSWER specific gravity
Urine specific gravity is an index of the ability of the kidney to - ANSWER concentrate the urine
Osmolality is a measure of - ANSWER dissolved particles, including ions
A patient urine sample has an increased protein and a high specific gravity. Which of the
following would be a more accurate measure of urine concentration - ANSWER osmolality
To prepare a solution appropriate for quality control of the refractometer, a technician should
use - ANSWER sodium chloride with a specific gravity of 1.022
A urine's specific gravity is directly proportional to its - ANSWER dissolved solids
Isosthenuria is associated with a specific gravity which is usually - ANSWER fixed around 1.010
The fluid leaving the glomerulus normally has a specific gravity of - ANSWER 1.010
,An antidiuretic hormone deficiency is associated with a - ANSWER low specific gravity
Use of a refractometer over a urinometer is preferred due to the fact that the
refractometer uses - ANSWER small volume of urine and compensates for temperature
Calibration of refractometer is done by measuring for specific gravity of distilled water and -
ANSWER Sodium chloride
The method of choice for performing a specific gravity measurement of urine following
administration of x-ray contrast dyes is - ANSWER reagent strip
Which of the following urinary parameters are measured during the course of concentration
and dilution tests to assess renal tubular function - ANSWER osmolality and specific gravity
Refractive index is a comparison of - ANSWER light velocity in air to light velocity in solutions
Which of the following can give a false-negative urine protein reading - ANSWER very dilute
urine
the pH of a urine specimen measured the - ANSWER free hydrogen ions
Upon standing at room temperature, a urine pH typically - ANSWER increases
Urine reagent strips should be stored in a(n) - ANSWER cool dry area
The principle of the reagent strip test 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
Which of the following reagents is used to react with ketones in the urine - ANSWER Sodium
nitroprusside
A test area of a urine reagent strip is impregnated with only sodium nitroprussise. This
section will react with - ANSWER acetoacetic (diacetic) acid
A reagent strip area impregnated with stabilized, diazotized 2,4-dichloroaniline will yield a
positive reaction with - ANSWER bilirubin
Which of the following factors will NOT interfere with the reagent strip test for leukocytes -
ANSWER nitrite
Excess urine on the reagent strip can turn a normal pH result into a falsely acidi 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 week 1 of starving herself,
what substance would most likely be found in her urine - ANSWER ketones
A 2year old child had a positive urine ketone. 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 technologist should determine if
this patient has taken - ANSWER vitamin C
The purpose for routinely screening diabetes mellitus patients for microalbuminuria is
to monitor the development of - ANSWER renal disease
The principle of the reagent strip test for microalbuminuria is - ANSWER a dye-binding reaction
The reason that an albumin creatinine ratio can be run on a random specimen is - ANSWER
creatinine corrects for over or under body hydration
To prepare the reagent used in confirmatory protein testing, a technician would - ANSWER
dissolve 3 g sulfosalicylic acid in 100 mL of water
A positive result for bilirubin on a reagent strip should be followed up by - ANSWER
performing an ictotest
Ammonia sulfate was added to red urine. The urine had a positive reaction for blood, but no
RBC's were seen on microscopic examination. After centrifugation the supernatant fluid is red.
The abnormal color is caused by - ANSWER myoglobin
A urine tested with clinitest exhibits a pass through reaction and is diluted by adding 2 drops
of urine to 10 drops of water. This is a dilution of - ANSWER 1:6
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