Glomerular filtration rate
Measurement of the GFR can be very helpful to medical professionals. It helps them decide if a person has a disease of the kidneys or not. A normal value for GFR is between 90-110ml/min. This will normally go down in older people. It will also go down in people with kidney disease. As well as helping a medical professional diagnose a kidney disease, the GFR is also used to monitor the progress of a disease.