BUN/Creatinine Ratio Calculator
Calculate and interpret BUN/Creatinine ratio for kidney function and prerenal azotemia assessment.
Lab Values
Normal range: 7-20 mg/dL
Normal range: 0.7-1.2 mg/dL
Individual Values
BUN: Normal
Creatinine: Normal
BUN/Creatinine Ratio
15:1
Normal Ratio
BUN
15 mg/dL
Creatinine
1 mg/dL
Ratio
15:1
Possible Causes
Normal kidney function with adequate perfusion
Clinical Recommendation
Normal range. No specific intervention needed for the ratio itself.
Ratio Interpretation
- <10:1: Low - liver disease, malnutrition
- 10-20:1: Normal ratio
- 20-40:1: Prerenal azotemia likely
- > 40:1: GI bleeding, severe prerenal