Kidney Function
What is BUN? Optimal Ranges & Function
Normal Range:7-20 mg/dL
Optimal Range:10-16 mg/dL
What is BUN?
Blood Urea Nitrogen measures the amount of urea nitrogen in your blood. Urea is a waste product formed when protein is broken down by the liver and excreted by the kidneys.
Why BUN Matters
BUN helps evaluate kidney function and hydration status. Elevated levels may indicate kidney disease, dehydration, or high protein intake, while low levels can suggest liver disease or malnutrition.
Symptoms of Low BUN
- Usually not concerning
- May indicate liver issues
- Could suggest malnutrition
Symptoms of High BUN
- Fatigue
- Nausea
- Loss of appetite
- Confusion
- Decreased urination
Reference Ranges
7 mg/dL20 mg/dL
10
16
Standard Lab Range
BioStack Optimal
| Range Type | Minimum | Maximum | Unit |
|---|---|---|---|
| Normal Range | 7 | 20 | mg/dL |
| Optimal Range | 10 | 16 | mg/dL |