Urinalysis & Body Fluids

178 Questions | Total Attempts: 1295

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Urinalysis & Body Fluids

Urinalysis is the process of checking the appearance, concentration and content of urine so as to detect a wide range of medical disorders like diabetes and kidney disease. What can you tell us about this, and other bodily fluids?


Questions and Answers
  • 1. 
    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

  • 2. 
    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

  • 3. 
    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

  • 4. 
    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

  • 5. 
    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

  • 6. 
    The following results were obtained one a urine speciment at 8:00 am: pH:                 5.5 protein:           2+ glucose:         3+ ketones:         3+ blood:             negative bilirubin:          positive nitrite:             positive If this urine speciment was stored uncapped at 5 degrees C without preservation and retested at 2pm, which of the following test results would be changed due to these storage conditions?
    • A. 

      Glucose

    • B. 

      Ketones

    • C. 

      Protein

    • D. 

      Nitrite

  • 7. 
    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

  • 8. 
    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

  • 9. 
    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 600 mL, but there was some question as to the completeness of the 24-hour collection. The next step would be to :
    • A. 

      Perform the hormone determination, since 600 mL is a normal 24-hour urine volume

    • B. 

      Check the creatinine level; if it is

    • C. 

      Report the hormone determination in mg/dL in case the specimen was incomplete

    • D. 

      Check the creatinine level; if it is >1g, do the procedure

  • 10. 
    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

  • 11. 
    EGFR calculated by the MDRD formula takes into account the age, BUN, race, albumin and what else for its calculation?
    • A. 

      Urea

    • B. 

      Ammonia

    • C. 

      Creatinine

    • D. 

      Cystatin C

  • 12. 
    The creatinine clearance is reported in:
    • A. 

      Mg/dL

    • B. 

      Mg/24 hours

    • C. 

      ML/min

    • D. 

      ML/24 hours

  • 13. 
    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

  • 14. 
    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

  • 15. 
    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

  • 16. 
    An ammonia-like odor is characteristically associated with urine from patients who:
    • A. 

      Are diabetic

    • B. 

      Have hepatitis

    • C. 

      Have an infection with Proteus sp

    • D. 

      Have a yeast infection

  • 17. 
    Urine that develops a port wine color after standing may contain:
    • A. 

      Melanin

    • B. 

      Porphyrins

    • C. 

      Bilirubin

    • D. 

      Urobilinogen

  • 18. 
    Acid urine that contains hemoglobin will darken on standing due to the formation of:
    • A. 

      Myoglobin

    • B. 

      Sulfhemoglobin

    • C. 

      Methemoglobin

    • D. 

      Red blood cells

  • 19. 
    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

  • 20. 
    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

  • 21. 
    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

  • 22. 
    A brown-black urine would most likely contain:
    • A. 

      Bile pigment

    • B. 

      Porphyrins

    • C. 

      Melanin

    • D. 

      Blood cells

  • 23. 
    The yellow color of urine is primarily due to:
    • A. 

      Urochrome pigment

    • B. 

      Methemoglobin

    • C. 

      Bilirubin

    • D. 

      Homogenistic acid

  • 24. 
    Red urine may be due to:
    • A. 

      Bilirubin

    • B. 

      Excess urobilin

    • C. 

      Myoglobin

    • D. 

      Homogenistic acid

  • 25. 
    A urine specimen collected on an apparently healthy 25-year-old man shortly after he finished eating lunch was cloudy by showed some normal results on a multiple reagent strip analysis. The most likely cause of the turbidity is:
    • A. 

      Fat

    • B. 

      White blood cells

    • C. 

      Urates

    • D. 

      Phosphates

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