Above the range
Common causes of a high BUN-to-Creatinine Ratio
- Dehydration / prerenal azotemia
- GI bleeding
- High protein intake
Looking for the other direction? See what causes a low BUN-to-Creatinine Ratio.
All tests · Kidney Function · BUN-to-Creatinine Ratio
Above the range
What causes a high BUN-to-Creatinine Ratio?
Normal range 10-20 ratio. Specimen: Serum (calculated). See the full BUN-to-Creatinine Ratio reference page for critical values and nursing considerations.
What is the normal range for BUN-to-Creatinine Ratio?
The standard teaching reference range for BUN-to-Creatinine Ratio is 10-20 ratio. This value is measured in serum (calculated).
| Specimen | Serum (calculated) |
|---|---|
| Conventional range | 10-20 ratio |
| SI range | 10-20 ratio |
| Panel | Kidney Function |
Full details, including nursing considerations, on the BUN-to-Creatinine Ratio normal range page. Reference ranges vary by laboratory, method, age, sex, and population - always use the range printed on the actual result.
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