Is a Bun/creatinine Ratio of 25 Dangerous?
Medically reviewed by Linda Girgis | MD, Girgis Family Medicine on August 21st, 2026.
A BUN/creatinine ratio of 25 is elevated and requires medical evaluation. The normal range is typically 10-20, making 25 moderately elevated but not immediately life-threatening. This ratio helps distinguish between kidney problems (low ratio) and dehydration or heart issues (high ratio). Elevated ratios above 20 can indicate dehydration, gastrointestinal bleeding, high protein diet, or certain medications like steroids. Values above 30 are considered significantly elevated and warrant prompt medical attention. Your healthcare provider will interpret this result alongside your symptoms, other lab values, and medical history to determine the underlying cause and appropriate treatment.
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