Metabolic / Electrolytes
Also known as: Blood urea nitrogen, Renal insufficiency - BUN, Renal failure - BUN
No common urgent flag from this test alone
This test checks how much urea nitrogen is in your blood. Urea nitrogen is a waste product. Your body makes it when it breaks down protein.
Your doctor orders this test to check how well your kidneys are working. It helps them see your overall kidney health.
Reference ranges for BUN can vary between different laboratories and may also depend on your age. Always discuss your specific test results with your doctor.
Clinical Reference
175932200083519Medicare covers for diabetes and insulin resistance evaluation
Educational purposes only — This information is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your lab results with your healthcare provider.