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Body Fluid and Urine Analysis Ch 2-4 Test Banks With Solutions
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Body Fluid and Urine Analysis Ch 2-4 Test Banks With Solutions A urine specimen may be rejected by the laboratory for all of the following reasons nonmatching label and requisition form, specimen contaminated with feces, and contamination on the exterior of the container. An unpreserved ur...

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  • October 26, 2024
  • 24
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • body fluid and urine analysis ch 2 4
  • test banks with solutions

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  • Urinalysis and Body Fluids
  • Urinalysis and Body Fluids

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Body Fluid and Urine Analysis Ch 2-4 Test
Banks With Solutions

A urine specimen may be rejected by the laboratory for all of the following reasons

nonmatching label and requisition form, specimen contaminated with feces, and

contamination on the exterior of the container.




An unpreserved urine specimen left at room temperature overnight will have decreased

glucose and ketones.




Protein will be least affected in an unpreserved specimen left at room temperature

overnight.




Red blood cells will disintegrate more rapidly in urine that is dilute and alkaline




The primary cause of the changes that take place in unpreserved urine is bacterial growth




Bilirubin is the urine chemical that will deteriorate when exposed to light

, Body Fluid and Urine Analysis Ch 2-4 Test
Banks With Solutions
Decreased pH is least likely to occur if a urine specimen stands at room temperature for more

than 2 hours.




A urine specimen for reagent strip glucose analysis can be preserved using refrigeration,

boric acid and commercial tablets. It cannot be preserved with sodium fluoride.




urine specimen containing a large amount of precipitated amorphous material may have been

preserved using refrigeration.




In the laboratory, the preferred method of urine preservation is refrigeration




A specimen for routine urinalysis and culture can be preserved using Boric acid




Sodium fluoride is not a good preservative for urinary cellular elements.




Before analysis, a refrigerated urine specimen must be returned to room temperature




The recommended specimen for routine urinalysis testing is the first morning specimen

, Body Fluid and Urine Analysis Ch 2-4 Test
Banks With Solutions

The required specimen for quantitative analysis of urinary constituents is the timed

specimen




A first morning specimen is frequently requested to confirm orthostatic proteinuria.




The first morning specimen from a patient with no history of symptoms for diabetes is positive

for glucose. The patient should be asked to collect the second morning specimen




The specimen of choice for routine urinalysis is the first morning urine because it is more

concentrated to better detect abnormalities.




Quantitation of a substance that varies with daily activities should be performed on a 24-

hour specimen




Failure to empty the bladder before beginning the collection of a timed urine specimen will cause

falsely increased results

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