Compare markers
BUN vs creatinine
BUN and creatinine are both kidney-related markers but can be influenced by different factors.
General biomarker education — not personalized medical advice. Learn more
BUN
BUN measures a waste product from protein breakdown, often reported with creatinine.
Creatinine
Creatinine is a waste product measured in blood and often used when assessing kidney-related lab context.
Why both appear on reports
Metabolic panels frequently include BUN with creatinine to assess kidney-related patterns together.
When to discuss with your clinician
Ask whether hydration, diet, or medications could affect either marker on your report.