eGFR 90 Meaning: Is It Normal Kidney Function?

An eGFR of 90 mL/min/1.73 m² is generally in the normal-or-high G1 category. It does not guarantee that every kidney test is normal, because CKD can be present with eGFR above 90 when urine albumin or another marker shows kidney damage.

You can review the category with our CKD stage calculator, but the result should be interpreted alongside your age, blood pressure, urine testing, and medical history.

Is eGFR 90 normal?

For most adults, 90 or higher is considered normal or high filtration. Healthy eGFR varies with age, body size, muscle mass, and the laboratory method used to measure creatinine. A single result near 90 is usually reassuring, especially when UACR and urinalysis are normal.

Can you have kidney disease with eGFR 90?

Yes. CKD is not defined by eGFR alone. Persistent albumin in urine, blood in urine from kidney disease, structural abnormalities on imaging, or a history of kidney transplant can indicate kidney damage even when eGFR is 90 or higher.

How should you monitor an eGFR of 90?

Follow the testing schedule recommended for your risk level. Diabetes, high blood pressure, cardiovascular disease, obesity, smoking, and family history can justify regular eGFR and UACR testing. Do not compare one eGFR with a friend or an age chart; compare your own results over time.

Can eGFR change from 90 to a lower number?

Small changes are common because creatinine is affected by hydration, diet, exercise, illness, and medication. A sustained decline is more meaningful than a single fluctuation. Use the eGFR calculator to record the date and laboratory inputs consistently.

This article is educational information, not medical advice. Ask a healthcare professional to interpret persistent changes or abnormal urine results.