edbe4ac4_mmon_Lab_Values___Life_Options__What_it_Means
[Test] Glomerular Filtration Rate (GFR) [Normal Levels] Healthy adults have a GFR of about 140*; normal is greater than 90. Children and the elderly usually have lower GFR levels. A GFR less than 15 is kidney failure. *GFR is reported in mL/min/1.73 m2. [What it Means] 
GFR is a more accurate way to measure how well your kidneys filter wastes from your blood. Your GFR gives your doctor an idea of the speed at which your kidneys are failing, and whether you are at risk for complications of kidney disease. GFR can be estimated from serum creatinine, using a formula.
Kidney Disease Info | Common Lab Values | Life Options
What it Means