estimated glomerular filtration rate (eGFR) to determine if you have kidney disease, and if so, what stage. eGFR measures your kidneys' ability to filter toxins or waste from your blood. A very low number may indicate kidney failure, which requires dialysis or a kidney transplant
Glomeruli are tiny filters in your kidneys that help remove toxins (waste) from your blood. Estimated glomerular filtration rate (eGFR) measures how much blood these filters clean every minute based on your body size. When you have a routine blood test, eGFR is often part of the basic metabolic panel.
eGFR helps healthcare providers spot problems with your kidneys, including kidney disease.
Your kidneys are part of the urinary system. Kidney disease occurs when one or both kidneys have damage. When you have kidney disease, the glomeruli filter less blood. As a result, dangerous toxins can build up in your blood.
Kidney disease symptoms, such as frequent urination and muscle spasms, may not occur until you lose up to 40% of kidney function. eGFR helps providers detect the disease early so that you can start treatments to slow or stop kidney damage.