Urea nitrogen is produced when the body breaks down protein. ... General reference ranges for a normal BUN level are as follows: Adults up to 60 years of age: 6-20 mg/dL; ...

Three of 4 patients with urea clearances 13 to 22 per cent of normal still had serum concentrations of 6.3 microgm. per milliliter twenty-four hours after injection of colistimethate sodium; 4 of ...

Urea cycle disorders are inherited metabolic disorders makes it hard for your body to break down proteins. Learn more about symptoms, emergency treatment, and long-term management.