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Urinalysis & Body Fluids Questions With Solutions 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 centr...

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  • October 26, 2024
  • 56
  • 2024/2025
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Urinalysis & Body Fluids Questions With
Solutions

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 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 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

, Urinalysis & Body Fluids Questions With
Solutions
C. bacterial contamination will cause alkalinization of the urine


D. ketones will increase due to bacterial and cellular metabolism 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 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 pH

, Urinalysis & Body Fluids Questions With
Solutions
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 centrifuging an unmixed specimen




The creatinine clearance is reported in:

A. mg/dL

B. mg/24 hours

C. mL/min


D. mL/24 hours 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 nephropathy

, Urinalysis & Body Fluids Questions With
Solutions

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 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 phenylpyruvic acid




Urine that develops a port wine color after standing may contain:

A. melanin

B. porphyrins

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