BUN/Creatinine Ratio
Screens for pre-renal vs intrinsic renal causes.
RESULT
BUN/Creatinine Ratio
What is BUN/Creatinine Ratio?
Screens for pre-renal vs intrinsic renal causes. BUN/Creatinine Ratio is intended for use in: Adults.
How to Use the BUN/Creatinine Ratio Calculator
- Enter BUN in mg/dL.
- Enter Creatinine in mg/dL.
- Click Calculate to see your result and interpretation.
Formula & Version
This calculator uses formula version 1.0, last reviewed September 2026.
Clinical Considerations & Limitations
- A screening ratio only — affected by diet, GI bleeding, steroid use, and muscle mass, not just renal perfusion.
References
- Standard renal-function screening ratio; normal ≈ 10:1 to 20:1
Frequently Asked Questions
What is BUN/Creatinine Ratio?
Screens for pre-renal vs intrinsic renal causes.
Who is BUN/Creatinine Ratio intended for?
Adults. Always confirm applicability to your specific patient before use.
What are the limitations of BUN/Creatinine Ratio?
A screening ratio only — affected by diet, GI bleeding, steroid use, and muscle mass, not just renal perfusion.
What formula or reference does BUN/Creatinine Ratio use?
Standard renal-function screening ratio; normal ≈ 10:1 to 20:1
Is BUN/Creatinine Ratio a diagnosis?
No. BUN/Creatinine Ratio produces a score or estimate to support clinical decision-making — it is not a diagnosis and should be interpreted alongside full clinical judgement.
Medical Disclaimer: Medical calculators are provided for informational and educational purposes only. Results should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always verify results with a qualified healthcare professional.
