What This Value Measures
The estimated glomerular filtration rate (eGFR) describes how much blood the kidneys filter per minute. It is calculated from creatinine and is a key measure of kidney function.
Elevated Value
High values are generally unremarkable.
Low Value
A value between 60 and 89 does not, on its own, mean chronic kidney disease. This diagnosis is only made when abnormalities of kidney function or structure persist for at least three months — for example, an eGFR below 60 or persistent protein in the urine.
Note: A calculated estimate; it depends on age, sex, and muscle mass. It is assessed together with the course over time and other kidney values, not as a single, isolated value.
Reference ranges are typical guide values for adults and vary depending on the laboratory, measurement method, age and sex — always compare with the range stated on your own report. A value outside the range does not automatically mean an illness, and a value within the range does not rule one out. The trend and overall picture are usually more informative than a single value. The doctor's assessment is always decisive.