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BUN
Alternate Names : Blood urea nitrogen
Normal Values
7 - 20 mg/dL. Note that normal values may vary among different laboratories.
What do Abnormal Results Mean?
Higher-than-normal levels may be due to:
Lower-than-normal levels may be due to: - Liver failure
- Low protein diet
- Malnutrition
- Over-hydration
Additional conditions under which the test may be done include:
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Review Date : 5/13/2009
Reviewed By : David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; Jatin M. Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School, Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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