Urea / BUN (Blood Urea Nitrogen) Test

What is It?

The Urea/BUN test measures the amount of urea nitrogen in your blood. Urea is a waste product made in your liver when your body breaks down proteins, and your kidneys are responsible for filtering it out of your blood. This test helps check how well your kidneys are working.

Why is the Urea/BUN Test Important?

• It helps determine how well your kidneys are removing waste from your blood.

• High levels may indicate kidney problems, dehydration, or other health issues.

• It can help monitor kidney function if you have conditions like diabetes or high blood pressure.

How is the Test Done?

1. A small blood sample is taken from a vein in your arm.

2. The sample is sent to a lab to measure the amount of urea nitrogen in your blood.

3. The doctor reviews the results to assess your kidney health.

What Do the Results Mean?

• Normal levels vary depending on age and health conditions, but typically range between 7-20 mg/dL.

• High levels can suggest kidney issues, dehydration, or a high-protein diet.

• Low levels are rare but can happen due to malnutrition or liver problems.

What Should You Do Before the Test?

• Usually, no special preparation is needed.

• Let your doctor know if you're taking any medications, as some drugs can affect the results.

What Happens After the Test?

Your doctor will explain your BUN levels:

• If levels are high, your doctor may suggest further tests to find the cause and check your kidney function.

• If levels are normal, it means your kidneys are working properly.

In summary, the Urea/BUN test is a simple blood test that helps check how well your kidneys are removing waste from your blood, giving your doctor important information about your kidney health.