BUN / Creatinine Ratio
Also Known As
Test Parameters Included
- Calculated BUN to Creatinine Ratio (dimensionless) - derived from serum urea nitrogen and serum creatinine values
- Pathologist Renal Function Remark - interpreted against pre-renal, renal, and post-renal differential reference ranges
Department
Methodology
Sample Required
Preparation
Schedule Report
24 Hours
Emergency Report
Yes
Frequently Asked Questions
What does the BUN/Creatinine Ratio measure?
It compares blood urea nitrogen to serum creatinine to help distinguish between pre-renal, intrinsic renal, and post-renal causes of kidney dysfunction. A normal ratio typically ranges from 10:1 to 20:1.
What does a high BUN/Creatinine Ratio indicate?
A ratio above 20:1 suggests pre-renal azotemia, commonly caused by dehydration, heart failure, gastrointestinal bleeding, or reduced renal perfusion. Urea reabsorption increases when blood flow to kidneys is compromised.
What does a low BUN/Creatinine Ratio mean?
A ratio below 10:1 may indicate intrinsic kidney disease, severe liver disease, malnutrition, or overhydration. Low urea production in liver dysfunction or increased creatinine from muscle breakdown can also lower the ratio.
Is fasting required for this test?
Fasting is not strictly required, but it is often recommended as part of a comprehensive kidney function panel. Hydration status significantly affects urea levels, so maintain normal fluid intake unless instructed otherwise.
How is the report delivered?
Verified PDF report is available within 24 hours via www.drpatholab.in or through WhatsApp and email for Chhatrapati Sambhajinagar patients.
Test Description
Test Code
B26S
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