A normal Blood Urea Nitrogen (BUN) level typically falls within the range of 6 to 24 mg/dL.
Here's a more detailed breakdown:
A BUN test measures the amount of urea nitrogen in your blood. Urea nitrogen is a waste product that your kidneys filter out of your blood. BUN levels can provide important information about how well your kidneys are working. Several factors can influence BUN levels, and it's important to interpret them in the context of your overall health.
Understanding BUN Levels
- Normal Range: Generally, a BUN level of 6 to 24 mg/dL (2.1 to 8.5 mmol/L) is considered normal.
- Age: Urea nitrogen levels tend to increase with age.
- Lab Variations: Normal ranges can vary slightly depending on the specific reference range used by the laboratory performing the test.
- Other Factors: Various factors besides kidney function can affect BUN levels, including diet, hydration, and certain medications.
Factors Affecting BUN Levels
Several factors can cause BUN levels to fluctuate:
- Kidney Function: Impaired kidney function is a primary cause of elevated BUN levels.
- Dehydration: Dehydration can lead to a higher concentration of urea nitrogen in the blood.
- Diet: A diet high in protein can increase BUN levels.
- Medications: Certain medications can affect kidney function and BUN levels.
- Age: As mentioned, BUN levels tend to increase with age, even with normal kidney function.
Interpreting Your Results
Because so many factors can affect BUN levels, it's important to discuss your results with your doctor.
- Consult Your Doctor: Always consult with your doctor to understand your specific BUN results and what they mean for your health.
- Context is Key: Your doctor will interpret your BUN levels in the context of your medical history, physical exam, and other lab results.
