Biomarker education
eGFR
Also called: Estimated glomerular filtration rate
eGFR is an estimate of kidney filtration rate derived from creatinine (and sometimes other inputs) using a laboratory equation.
General biomarker education — not personalized medical advice. Learn more
What it generally measures
Rather than a direct measurement of filtration, eGFR estimates function using formulas that incorporate creatinine and demographic inputs defined by the lab’s method.
Common units on reports: mL/min/1.73 m²
Why people track it over time
People often watch eGFR across years of metabolic panels. Equations and reporting standards can differ between labs — compare carefully.
Changes over time do not by themselves establish a diagnosis. Learn more
Questions you might ask a healthcare professional
- Ask which equation the lab used and whether it matches prior reports.
- Review eGFR together with creatinine and any notes on the source report.
- Ask what follow-up, if any, your clinician recommends based on your full history.
Related markers
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