BUN

Blood urea nitrogen (BUN) measures the amount of urea nitrogen in your blood. Urea nitrogen is a waste product created when your body breaks down protein, and your kidneys filter it out.

Category: Metabolic Panel

Also known as: bun, blood urea nitrogen, urea nitrogen, urea

Reference range: 7–20 mg/dL (Source: ABIM)

Standard unit: mg/dL

High values may indicate

High BUN levels may indicate kidney disease, dehydration, a high-protein diet, heart failure, or urinary tract obstruction.

Low values may indicate

Low BUN levels may indicate liver disease, malnutrition, overhydration, or a very low-protein diet.

Source: MedlinePlus, U.S. National Library of Medicine

Track your BUN over time with BloodId