BUN
Alternate Names : Blood Urea Nitrogen
What do Abnormal Results Mean?
Greater-than-normal levels may indicate:
Lower-than-normal levels may indicate:
- Liver failure
- Low protein diet
- Malnutrition
- Over-hydration
Additional conditions under which the test may be performed:
- Acute nephritic syndrome
- Alport syndrome
- Atheroembolic renal disease
- Chronic renal failure
- Complicated UTI (pyelonephritis)
- Dementia due to metabolic causes
- Diabetic nephropathy/sclerosis
- Digitalis toxicity
- End-stage renal disease
- Epilepsy
- Generalized tonic-clonic seizure
- Goodpasture's syndrome
- Hemolytic-uremic syndrome (HUS)
- Hepatorenal syndrome
- IgM mesangial proliferative glomerulonephritis
- Interstitial nephritis
- Lupus nephritis
- Malignant hypertension (arteriolar nephrosclerosis)
- Medullary cystic disease
- Membranoproliferative GN I
- Membranoproliferative GN II
- Noninsulin-dependent diabetes mellitus (NIDDM)
- Prerenal azotemia
- Primary amyloid
- Rapidly progressive (crescentic) glomerulonephritis
- Secondary systemic amyloid
- Wilms' tumor
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