Home › Lab markers › eGFR (Estimated Glomerular Filtration Rate)
COMPREHENSIVE METABOLIC PANEL (CMP)
Also printed as: GFR · Estimated GFR · eGFR
Educational only — not medical advice.
eGFR is not measured directly — it is calculated from your creatinine, age, and sex. It estimates how much blood your kidneys filter per minute. Think of it as a summary score for kidney filtering rather than a standalone test.
Because eGFR is derived from creatinine, anything that moves creatinine moves eGFR in the opposite direction. That makes the trend across several draws far more informative than one calculation, and it is why clinicians confirm a changed eGFR before acting on it.
TYPICAL ADULT RANGE
Many labs report 90 or above as expected for adults, and flag values below 60 for follow-up. eGFR is an estimate, and it naturally declines somewhat with age. Reported in mL/min/1.73m².
Reference ranges vary by lab, by method, and by age and sex. Always read your own result against the range printed on your report.
Upload your report — every line explained free
Drop in a PDF or a photo of your lab results and get a plain-English breakdown of every marker on it, in the same calm language you just read. No account needed to start.
Explain my lab report →🔒 Secure & encrypted · Free to try
A lower eGFR most often follows a temporarily higher creatinine, and the usual explanations are ordinary: dehydration on the day of the draw, a hard workout, creatine supplementation, or a large meat meal. Age is also built into the estimate, so a gradual, mild decline over decades is expected. A value that stays below the flagged threshold on a repeat draw is the sort of finding your doctor will want to follow with additional testing — not something to interpret from a single report.
Higher eGFR values are generally reported as "normal or above" and are not usually treated as a problem. Very high estimates can appear in people with low muscle mass, since the formula assumes a typical creatinine production, and sometimes during pregnancy. If your report shows an unusually high number, the useful question is whether creatinine is unexpectedly low rather than whether kidneys are "too fast."
Your doctor is the one who can read this number against your history, symptoms, and medications.
Educational only — not medical advice. Lab results only mean something alongside your history, symptoms, medications, and the rest of your panel. Bring questions to your doctor; they are the one who can interpret your results for you.
All lab markers · Upload a report · About E-Labus · Privacy
© E-Labus. Educational only — not medical advice.
Hi, I'm Ellie.
Your whole health story — one intelligence.