eGFR stands for estimated glomerular filtration rate, which is a measure of how well your kidneys are working. It is a blood test that estimates the amount of creatinine in your blood, which is a waste product that comes from the digestion of dietary protein and the normal breakdown of muscle tissue. The eGFR is considered a mostly reliable test for doctors to know how well your kidneys are working. A normal eGFR is 60 or more, and if your eGFR is less than 60 for three months or more, your kidneys may not be working well. The eGFR test report will give a number that will tell doctors the amount of creatinine in your blood, and you will also get a lab report that will contain this number. Your eGFR can change over time and can change based on some other problems, like if you have not been drinking enough water.

It is important to note that the eGFR may not be accurate if you are younger than 18, pregnant, very overweight, or very muscular. Other tests such as an ultrasound or a kidney biopsy may be ordered to find a cause of your kidney disease. If this was your first eGFR test, you may need to be tested again in a few months. Your doctor will want to see if your eGFR is 60 or less.

In summary, eGFR is a blood test that measures how well your kidneys are working by estimating the amount of creatinine in your blood. It is a mostly reliable test for doctors to know how well your kidneys are working, and a normal eGFR is 60 or more. If your eGFR is less than 60 for three months or more, your kidneys may not be working well.