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Bun Creatinine Ratio Calculator


FAQ

What is a normal BUN creatinine ratio?

  • The ideal ratio of BUN to creatinine falls between 10-to-1 and 20-to-1.
  • Having a ratio above this range could mean you may not be getting enough blood flow to your kidneys, and could have conditions such as congestive heart failure, dehydration, or gastrointestinal bleeding.

How to calculate BUN Creatinine Ratio?

You can calculate BUN Creatinine Ratio by this formula.

BUN Creatinine Ratio = BUN / Creatinine

How do I calculate the BUN-to-creatinine ratio?

To calculate the bun creatinine ratio:

  • Determine the patient's blood urea nitrogen (BUN) and serum creatinine levels.
  • Make sure the units are the same – usually mg/dL.
  • Divide BUN by serum creatinine to obtain the BUN creatinine ratio.

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