Urinalysis and Body Fluids Exam |144 Q’s and
A’s
After receiving a 24-hour urine for quantitative total protein analysis, the
technician must first: - -Measure the total volume
- False results in urobilinogen testing may occur if the urine specimen is: - -
Exposed to light
- A clean-catch urine is submitted to the laboratory for routine urinalysis and
culture. The routine urinalysis is done first, and 3 hours later, the specimen is
sent to the microbiology department for culture. The specimen should: - -Be
rejected due to the time delay
- Which of the following urine results is most apt to be changed by
prolonged exposure to light? - -Bilirubin
- Urine samples should be examined within 1 hour of voiding because: - -
Bacterial contamination will cause alkalinization of the urine
- A urine specimen comes to the laboratory 7 hours after it is obtained. It is
acceptable for culture only if the specimen has been stored: - -At 4*-7*C
- Which of the following would be affected by allowing a urine specimen to
remain at room temperature for 3 hours before analysis? - -pH
- Failure to observe RBC casts in a urine specimen can be caused by: - -
Centrifuging an unmixed specimen
- The creatinine clearance is reported in: - -mL/min
- Microalbumin can be measured by a random urine collection. An increased
microalbumin is predictive of: - -Nephropathy
- A patient with uncontrolled diabetes mellitus will most likely have: - -Pale
urine with a high specific gravity
- While performing an analysis of a baby's urine, the technologist notices the
specimen to have a "mousy" odor. Of the following substances that may be
excreted in urine, the one that most characteristically produces this odor is: -
-Phenylpyruvic acid
- Urine that develops a port wine color after standing may contain: - -
Porphyrins
, - Urine from a 50-year-old man was noted to turn dark red on standing. This
change is caused by: - -Porphyrins
- The clarity of a urine sample should be determined: - -Following thorough
mixing of the specimen
- Milky urine from a 24-year-old woman would most likely contain: - -Many
white blood cells
- A brown-black urine would most likely contain: - -Melanin
- The yellow color of urine is primarily due to: - -Urochrome pigment
- Red urine may be due to: - -Myoglobin
- Urine osmolality is related to: - -Specific gravity
- Urine specific gravity is an index of the ability of the kidney to: - -
Concentrate the urine
- Osmolality is a measure of: - -Dissolved particles, including ions
- To prepare a solution appropriate for quality control of the refractometer, a
technician should use: - -Sodium chloride with a specific gravity of 1.022
- A urine's specific gravity is directly proportional to its: - -Dissolved solids
- Use of a refractometer over a urinometer is preferred due to the fact that
the refractometer uses: - -Small volume of urine and compensates for
temperature
- The method of choice for performing a specific gravity measurement of
urine following administration of x-ray contrast dyes is: - -Reagent strip
- Upon standing at room temperature, a urine pH typically: - -Increases
- Urine reagent strips should be stored in a(n): - -Cool dry area
- The protein section of the urine reagent strip is most sensitive to: - -
Albumin
- Which of the following reagents is used to react with ketones in the urine? -
-Sodium nitroprusside
- A reagent strip area impregnated with stabilized, diazotized 2,4-
dichloroaniline will yield a positive reaction with: - -Bilirubin
A’s
After receiving a 24-hour urine for quantitative total protein analysis, the
technician must first: - -Measure the total volume
- False results in urobilinogen testing may occur if the urine specimen is: - -
Exposed to light
- A clean-catch urine is submitted to the laboratory for routine urinalysis and
culture. The routine urinalysis is done first, and 3 hours later, the specimen is
sent to the microbiology department for culture. The specimen should: - -Be
rejected due to the time delay
- Which of the following urine results is most apt to be changed by
prolonged exposure to light? - -Bilirubin
- Urine samples should be examined within 1 hour of voiding because: - -
Bacterial contamination will cause alkalinization of the urine
- A urine specimen comes to the laboratory 7 hours after it is obtained. It is
acceptable for culture only if the specimen has been stored: - -At 4*-7*C
- Which of the following would be affected by allowing a urine specimen to
remain at room temperature for 3 hours before analysis? - -pH
- Failure to observe RBC casts in a urine specimen can be caused by: - -
Centrifuging an unmixed specimen
- The creatinine clearance is reported in: - -mL/min
- Microalbumin can be measured by a random urine collection. An increased
microalbumin is predictive of: - -Nephropathy
- A patient with uncontrolled diabetes mellitus will most likely have: - -Pale
urine with a high specific gravity
- While performing an analysis of a baby's urine, the technologist notices the
specimen to have a "mousy" odor. Of the following substances that may be
excreted in urine, the one that most characteristically produces this odor is: -
-Phenylpyruvic acid
- Urine that develops a port wine color after standing may contain: - -
Porphyrins
, - Urine from a 50-year-old man was noted to turn dark red on standing. This
change is caused by: - -Porphyrins
- The clarity of a urine sample should be determined: - -Following thorough
mixing of the specimen
- Milky urine from a 24-year-old woman would most likely contain: - -Many
white blood cells
- A brown-black urine would most likely contain: - -Melanin
- The yellow color of urine is primarily due to: - -Urochrome pigment
- Red urine may be due to: - -Myoglobin
- Urine osmolality is related to: - -Specific gravity
- Urine specific gravity is an index of the ability of the kidney to: - -
Concentrate the urine
- Osmolality is a measure of: - -Dissolved particles, including ions
- To prepare a solution appropriate for quality control of the refractometer, a
technician should use: - -Sodium chloride with a specific gravity of 1.022
- A urine's specific gravity is directly proportional to its: - -Dissolved solids
- Use of a refractometer over a urinometer is preferred due to the fact that
the refractometer uses: - -Small volume of urine and compensates for
temperature
- The method of choice for performing a specific gravity measurement of
urine following administration of x-ray contrast dyes is: - -Reagent strip
- Upon standing at room temperature, a urine pH typically: - -Increases
- Urine reagent strips should be stored in a(n): - -Cool dry area
- The protein section of the urine reagent strip is most sensitive to: - -
Albumin
- Which of the following reagents is used to react with ketones in the urine? -
-Sodium nitroprusside
- A reagent strip area impregnated with stabilized, diazotized 2,4-
dichloroaniline will yield a positive reaction with: - -Bilirubin
