A glomerular filtration rate (GFR) test is a simple blood test that measures how well the kidneys are functioning. A doctor may order a GFR test to gauge kidney health. The kidneys are a pair of ...
The estimated glomerular filtration rate (eGFR) is a blood test to assess kidney function. The formula for calculating eGFR takes the patient’s body size, age, and sex into account to predict how well ...