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CLS Urinalysis & Body Fluids Test Banks With Solutions
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CLS Urinalysis & Body Fluids Test Banks With Solutions 3. A clean catch urine is submitted to the lab for routine urinalysis and culture. The routine urinalysis is done first, and 3 hours later, the specimen is sent to micro for culture. The specimen should: A. be centrifuged, and the super...

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  • October 26, 2024
  • 86
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • cls urinalysis body fluids
  • test banks with solutions

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  • Urinalysis and Body Fluids
  • Urinalysis and Body Fluids

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CLS Urinalysis & Body Fluids Test Banks
With Solutions

3. A clean catch urine is submitted to the lab for routine urinalysis and culture. The routine

urinalysis is done first, and 3 hours later, the specimen is sent to micro for culture. The specimen

should:

A. be centrifuged, and the supernatant cultured

B. be rejected due to the time delay

C. not be cultured if no bacteria are seen


D. be processed for culture only if the nitrate is positive B




4. Which of the following urine results is most apt to be changed by prolonged exposure to light?

A. pH

B. protein

C. ketones


D. bilirubin D




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 temp

B. urobilinogen increases and bilirubin decreases after prolonged exposure to light

, CLS Urinalysis & Body Fluids Test Banks
With Solutions
C. bacterial contamination will cause alkalization of the urine


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




6. The following results were obtained on a urine specimen at 8 AM

pH: 5.5

protein: 2+

glucose: 3+

ketones: 3+

blood: neg

bilirubin: pos

nitrite: pos

If this urine specimen was stored uncapped at 5 C without preservatives and retested at 2PM,

which of the following test results would be changed due to the storage conditions:

A. glucose

B. ketones

C. protein


D. nitrite B

, CLS Urinalysis & Body Fluids Test Banks
With Solutions
7. A urine specimen come to the lab 7 hours after it is obtained. I t is acceptable for culture only

if the specimen has been stored:

A. at room temp

B. at 4-7 C

C. frozen


D. with a preservative additive B




8. Which of the following would be affected by allowing a urine specimen at room temp 3 hours

before analysis?

A. occult blood

B. specific gravity

C. pH


D. protein C




9. A 24 hour urine from a man who had no evidence of kidney impairment was sent to the lab 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. preform the hormone determination, since 600 mL is a normal 24 hour urine volume

, CLS Urinalysis & Body Fluids Test Banks
With Solutions
B. check the creatinine level, if it is <1g, do the procedure

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 D




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 B




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 C




12. The creatinine clearance is reported in:

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