Kidney Function Test Values: BUN and Creatinine


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Why is low BUN dangerous?

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1. Which of the following is NOT indicated by elevated BUN?

2. Which of the following is NOT a cause of prerenal failure?

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About This Quiz & Worksheet

While there are many blood tests that can be affected by kidney function, there are just two main markers of kidney function itself and this quiz/worksheet combo will help you test your understanding of these. Some things you'll be assessed on include causes of abnormal creatinine and BUN (blood urea nitrogen) values.

Quiz & Worksheet Goals

In these assessments you'll be tested on:

  • Causes of depressed and elevated BUN levels
  • Metabolism of creatinine
  • Significance of the BUN:creatinine ratio

Skills Practiced

This quiz/worksheet allows students to test the following skills:

  • Reading comprehension - ensure that you draw the most important information from the related lesson about kidney function tests
  • Making connections - use understanding of basic kidney function to predict effects of pathology on creatinine and BUN levels
  • Problem solving - use acquired knowledge to solve clinical problems about kidney function tests

Additional Learning

To learn more about clinical evaluation of kidney problems, review the accompanying lesson titled Kidney Function Test Values: BUN and Creatinine. This lesson covers the following objectives:

  • Identify basic functions of the kidneys
  • Define BUN, creatinine and azotemia
  • Recognize examples of and distinguish between pre-renal, intrinsic (intra-renal) and post-renal kidney failure
  • Describe hypovolemia and explain its significance with regards to renal failure
  • Identify causes of abnormal BUN and creatinine levels