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Urinalysis and Body Fluids, 7th Edition by Strasinger
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Urinalysis and Body Fluids, 7th Edition by Strasinger
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TEST BANK For Urinalysis and Body Fluids, 7th Editionby Strasinger
After receiving a 24 hour urine for quantitative total protein analysis, the technician
must first:
A. subculture the urine for bacteria
B. add the appropriate preservative
C. screen for albumin using a dipstick
D. measure the total volume - ANSWER:measure the total volume
False results in urobilinogen testing may occur if the urine specimen is:
A. exposed to light
B. adjusted to a neutral pH
C. cooled to room temperature
D. collected in a nonsterile container - ANSWER: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:
A. be centrifuged, and the supernatant cultured
B. be rejected due to time delay
C. not be cultured if no bacteria are seen
D. be processed for culture only if the nitrate is positive - ANSWER:be rejected due
to the time delay
Which of the following urine results is most apt to be changed by proloinged
exposure to light?
A. pH
B. protein
C. ketones
D. bilirubin - ANSWER:bilirubin
Urine samples should be examined within 1 hour of voiding because:
A. RBCs, leukocytes and casts agglutinate on standing for several hours at room
temperature
B. urobilinogen increases and bilirubin decreases after prolonged exposure to light
C. bacterial contamination will cause alkalinization of the urine
D. ketones will increase due to bacterial and cellular metabolism - ANSWER:bacterial
contamination will cause alkalinization of the urine
A urine speciment comes to the laboratory 7 hours after it is obtained. It is
acceptable for culture only if the specimen has been stored:
A. at room temperature
B. at 4-7 degrees C
C. frozen
,D. with a preservative additive - ANSWER: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?
A. occult blood
B. specific gravity
C. pH
D. protein - ANSWER:pH
Failure to observe RBC casts in a urine specimen can be caused by:
A. staining the specimen
B. centrifuging an unmixed specimen
C. mixing the sediment after decantation
D. examining the sediment first under low power - ANSWER:centrifuging an unmixed
specimen
The creatinine clearance is reported in:
A. mg/dL
B. mg/24 hours
C. mL/min
D. mL/24 hours - ANSWER:mL/min
Microalbumin can be measured by a random urine collection. An increase
microalbumin is predictive of:
A. diabetes mellitus
B. nephropathy
C. hypertension
D. nephrotic syndrome - ANSWER:nephropathy
A patient with uncontrolled diabetes mellitus will most likely have:
A. pale urine with a high specific gravity
B. concentrated urine with a high specific gravity
C. pale urine with a low specific gravity
D. dark urine with a high specific gravity - ANSWER: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:
A. phenylpyruvic acid
B. acetone
C. coliform bacilli
D. porphyrin - ANSWER:phenylpyruvic acid
Urine that develops a port wine color after standing may contain:
A. melanin
B. porphyrins
, C. bilirubin
D. urobilinogen - ANSWER:porphyrins
Urine from a 50-year-old man was noted to turn dark red on standing. This change is
caused by:
A. glucose
B. porphyrins
C. urochrome
D. creatinine - ANSWER:porphyrins
The clarity of a urine sample should be determined:
A. using glass tubes only; never plastic
B. following thorough mixing of the specimen
C. after addition of sulfosalicylic acid
D. after the specimen cools to room temperature - ANSWER:following thorough
mixing of the specimen
Milky urine from a 24-year-old woman would most likely contain:
A. spermatozoa
B. many white blood cells
C. red blood cells
D. bilirubin - ANSWER:many white blood cells
A brown-black urine would most likely contain:
A. bile pigment
B. porphyrins
C. melanin
D. blood cells - ANSWER:melanin
The yellow color of urine is primarily due to:
A. urochrome pigment
B. methemoglobin
C. bilirubin
D. homogenistic acid - ANSWER:urochrome pigment
Red urine may be due to:
A. bilirubin
B. excess urobilin
C. myoglobin
D. homogenistic acid - ANSWER:myoglobin
Urine osmolality is related to:
A. pH
B. filtration
C. specific gravity
D. volume - ANSWER:specific gravity
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