Normal
BUN Level (mg/dL): 10; Creatinine Level (mg/dL): 1
BUN/Creatinine Ratio: 10; Interpretation: Normal kidney function
BUN Creatinine Ratio Calculator
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Calculates the ratio of Blood Urea Nitrogen (BUN) to Creatinine, which can indicate kidney issues or dehydration.
More tools:Health Calculators
How To Use
How to use this calculator
Start with your values, or try a preset.
Step 1
Enter BUN Level (mg/dL) and Creatinine Level (mg/dL) in the units shown.
Step 2
Read BUN/Creatinine Ratio and Interpretation in the results panel. Results update as you change the inputs.
Step 3
Choose a preset to load an example, then adjust the values for your situation.
Worked Examples
Example calculations
See the inputs and their calculated results.
Dehydration
BUN Level (mg/dL): 30; Creatinine Level (mg/dL): 1
BUN/Creatinine Ratio: 30; Interpretation: Possible pre-renal condition (e.g., dehydration)
Liver Disease
BUN Level (mg/dL): 5; Creatinine Level (mg/dL): 1
BUN/Creatinine Ratio: 5; Interpretation: Possible liver disease or low protein intake
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Important
Use the result as an estimate and confirm any medical decisions with a qualified professional.