Diagnostic finding

Elevated Blood Urea Nitrogen

An increase in serum urea nitrogen concentration above the reference range (adult male: 8-24 mg/dL; adult female: 6-21 mg/dL).

Causes

  • Renal failure:

    • Pre-renal hypoperfusion

    • Renal disease

    • Post-renal obstruction

  • Increased urea production

    • High-protein diet

    • Increased protein catabolism

    • Gastrointestinal bleeding

  • Medications

    • Diuretics

    • Antibiotics

Also known as: Azotemia, High Blood Urea Nitrogen, High BUN, Increased Blood Urea Nitrogen, Increased BUN

Referencing diagnoses

Note: Lists existing diagnoses in Diagnotize only.