Compare markers
Creatinine vs eGFR
Creatinine is measured directly; eGFR is usually calculated from creatinine and other factors.
General biomarker education — not personalized medical advice. Learn more
Creatinine
Creatinine is a waste product measured in blood and often used when assessing kidney-related lab context.
eGFR
eGFR is an estimate of kidney filtration rate derived from creatinine (and sometimes other inputs) using a laboratory equation.
Why both appear on reports
Kidney function on CMP panels typically shows creatinine alongside an estimated filtration rate for easier interpretation.
When to discuss with your clinician
Ask whether muscle mass, hydration, or medications could influence creatinine on your specific report.