
Blood Urea Nitrogen (BUN) Test: High vs. Low Levels, Normal Range - WebMD
Nov 22, 2025 · Doctors order a blood urea nitrogen (BUN) test to measure the amount of urea nitrogen in your blood. It helps them see how well your kidneys are working.
Blood Urea Nitrogen (BUN) Test - Cleveland Clinic
The blood urea nitrogen (BUN) test measures how much urea nitrogen is in your blood. BUN levels vary. High levels may indicate kidney damage.
Blood urea nitrogen (BUN) test - Mayo Clinic
Aug 5, 2023 · A common blood test, the blood urea nitrogen (BUN) test reveals important information about how well your kidneys are working. A BUN test measures the amount of …
What Level of BUN Indicates Kidney Failure? Stages - MedicineNet
A BUN test is also known by other names such as a urea nitrogen test and serum BUN. BUN indicates the urea nitrogen produced in the body during protein breakdown. It is removed from …
BUN (Blood Urea Nitrogen): MedlinePlus Medical Test
What is it used for? A BUN test is often part of a series of tests called a comprehensive metabolic panel (CMP). It can help diagnose or monitor kidney diseases.
Blood Urea Nitrogen (BUN) Test - Kaiser Permanente
A BUN test is done to see how well your kidneys are working. If your kidneys are not able to remove urea from the blood normally, your BUN level rises. Heart failure, dehydration, or a …
Blood urea nitrogen (BUN) test for kidney disease
Oct 9, 2025 · Learn about the blood urea nitrogen (BUN) test for kidney disease and find what your results mean.
Blood Urea Nitrogen (BUN) - Osmosis
Aug 21, 2025 · Blood urea nitrogen (BUN) is a product of protein metabolism that gets excreted in the urine. BUN levels are often tested as a measure of kidney function and can help to …
Blood Urea Nitrogen (Bun) Test: Results, Indications, and ... - Solv
Aug 5, 2024 · Discover the importance of the Blood Urea Nitrogen (BUN) test in assessing kidney function and overall health. Learn about the normal BUN ranges for different demographics, …
Blood Urea Nitrogen - University of Rochester Medical Center
BUN levels help your doctor see how well your kidneys are working. The test may be used along with other measurements to help diagnose a kidney disorder or find out how well your …