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BUN/Creatinine Ratio Calculator

Ratio of urea nitrogen to creatinine.

About BUN/Creatinine Ratio Calculator

Ratio of urea nitrogen to creatinine. The BUN/Creatinine Ratio Calculator on Picscaler gives you the answer instantly in your browser, with no sign-up.

Inputs: BUN (mg/dL) and Creatinine (mg/dL). Results shown: BUN/Cr ratio.

Formula: BUN/Cr = BUN (mg/dL) / creatinine (mg/dL). Reference intervals vary by age, sex, method and laboratory. Results support, and do not replace, clinical judgement.

This tool is for education and information. It does not replace clinical judgement, so confirm results against your laboratory's reference ranges and local guidelines.

How to use BUN/Creatinine Ratio Calculator

  1. Enter BUN (mg/dL) and Creatinine (mg/dL).
  2. Press Calculate.
  3. Read BUN/Cr ratio in the result table.
  4. Use the formula and notes under the result to check the working.

Frequently asked questions

Is BUN/Creatinine Ratio Calculator free?

Yes. BUN/Creatinine Ratio Calculator is completely free to use on Picscaler.

Do I need to create an account?

No. You can use it straight away without signing up.

Is my data safe?

Your input is processed in your browser on your own device and is not uploaded to Picscaler.

Can I use it for medical decisions?

No. It is an educational aid and does not replace professional medical judgement.

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