What Is the EGFR Test Used to Measure?

What Is the EGFR Test Used to Measure?

The estimated glomerular filtration rate test is used to measure how well the kidneys are working by performing a creatinine test and calculating a glomerular filtration rate, according to Lab Tests Online. Doctors analyze creatinine test results with age, sex and race to calculate a eGFR score.

A eGFR test is conducted via a blood test, and it measures the amount of creatinine in the blood, a waste byproduct that comes from the muscles, according to American Kidney Fund. It is often ordered as part of a comprehensive metabolic panel, basic metabolic panel or with a blood urea nitrogen test, notes Lab Tests Online. A normal eGFR score is generally between 90 to 120 milliliters per minute, while a score below 60 may indicate kidney disease.