BUN-to-Creatinine Ratio
This ratio compares blood urea nitrogen to creatinine to distinguish hydration fluctuations from intrinsic renal dynamics.
Test your personal value
Enter the number from your lab report to instantly see how it compares to reference ranges.
Physiological Reference Ranges
The ranges below represent standard adult physiological values. Your laboratory's printed reference range always takes precedence.
10 – 20 ratio
10 – 20 ratio
10 – 20 ratio
What does a low result mean?
A lower ratio is common with low-protein nutritional habits or smaller baseline muscle mass.
What does a high result mean?
A ratio above 20 very frequently reflects temporary mild dehydration or high protein dining the preceding evening.
Questions ready for your doctor
Bring these questions to your next consultation to discuss with your healthcare practitioner:
- Does this elevated ratio simply point toward needing more daily fluids?
- Does my standalone creatinine confirm healthy baseline kidney function?
- Will drinking 1.5 to 2 liters of water daily bring this ratio back to normal?
Do you have a full blood test report?
Upload your lab document (PDF or image) to get an instant, clear explanation for every biomarker at once.
Important information — Medical notice
ScanMyLab is for informational purposes only. It does not provide a diagnosis and never replaces the advice of your doctor or laboratory.