Estimated Glomerular Filtration Rate (eGFR) measures how well your kidneys filter waste from the blood. The main input is serum creatinine — a waste product filtered by the kidneys — which appears on standard blood test panels.
Open the eGFR Calculator CalculatorLocate your blood test report — it may be labelled "Full Blood Count", "Renal Profile", "U&E" (Urea & Electrolytes), or "Comprehensive Metabolic Panel".
Find the row labelled "Creatinine" or "Serum Creatinine" — it is typically in the renal or kidney section.
Note the value and its unit — UK/Australian reports use µmol/L; US reports often use mg/dL.
Note your age and biological sex, as both are required for the eGFR formula.
Enter all values into the eGFR calculator.
These ranges are educational references only and do not replace professional medical evaluation.
Healio360 tracks your eGFR readings over time. Multiple results allow the Health Intelligence dashboard to detect trends in kidney function — an early downward trend may be clinically significant even when individual values appear borderline.
View Health IntelligenceWhere can I find creatinine on a blood test?
Look in the renal, kidney, or electrolyte section of your blood test report. It will be labelled "Creatinine" or "Serum Creatinine".
What units are used for creatinine?
UK and Australian reports typically use µmol/L. US reports often use mg/dL. Make sure you select the correct unit in the calculator.
Is a low eGFR always serious?
A single low eGFR result may be affected by dehydration or illness. A persistent or declining eGFR over multiple tests is more clinically significant. Always discuss results with your doctor.