Understanding Your eGFR

Your kidneys are essential for a healthy life. A balanced diet, regular exercise, and medical check-ups are key to maintaining your eGFR and protecting your kidney function for the long term.

What Is eGFR?

The estimated glomerular filtration rate (eGFR) is a number that shows how well the kidneys are working. The kidneys act as filters, removing waste and extra water from the blood. The eGFR tells how much blood the kidneys filter each minute. This number is calculated from a blood test that measures a waste product called creatinine, along with your age and sex. Sometimes, another blood test called cystatin C may be used for a more accurate result.

Why Is eGFR Important?

eGFR is the main way doctors check kidney function. It helps to:

- Find kidney disease early, even before symptoms appear

- Monitor how kidney function changes over time

- Decide on the best treatments and medicines

- Adjust medication doses safely

- Plan for future care if kidney function gets worse

What Do eGFR Numbers Mean?

- A normal eGFR is usually 90 or higher, but this can vary with age.

- An eGFR below 60 for three months or more may mean chronic kidney disease (CKD).

- Lower numbers mean the kidneys are not working as well.

- An eGFR below 15 means the kidneys are very weak and may need special treatment, like dialysis or a kidney transplant.

Your eGFR is a key number for understanding your kidney health. This chart helps you know what your eGFR means and what actions you might need to take, from keeping up with healthy habits to consulting a kidney specialist.

What Can Affect eGFR?

eGFR is an estimate, not a perfect measurement. It can be affected by:

- Age, sex, and body size

- Muscle mass (more muscle can raise creatinine)

- Diet (eating a lot of meat products or taking creatine supplements)

- Certain medicines

- Dehydration or illness

Sometimes, your doctor may order extra tests, like cystatin C or a urine test, to get a clearer picture of your kidney health.

How Often Should eGFR Be Checked?

How often eGFR is checked depends on your health and risk factors. People with diabetes, high blood pressure, heart disease, or a family history of kidney problems may need more frequent testing.

What Can You Do to Protect Your Kidneys?

- Control blood pressure and blood sugar

- Take medicines as prescribed

- Avoid over-the-counter painkillers like ibuprofen unless your doctor says it’s okay

- Eat a healthy, balanced diet

- Stay active and maintain a healthy weight

- Don’t smoke

When to Talk to Your Doctor

Let your doctor know if you notice swelling, changes in urination, fatigue, or other new symptoms. Early action can help protect your kidneys.

Summary

eGFR is a key number for understanding kidney health. Knowing your eGFR and what it means can help you and your healthcare team make the best choices for your health.