eGFR (estimated Glomerular Filtration Rate) is a calculated measure of how well the kidneys are filtering waste from the blood. It is calculated from serum creatinine along with age and sex. A normal eGFR is 60 or above.

Urine ACR (albumin-to-creatinine ratio) measures the amount of albumin relative to creatinine in a urine sample. It is used to detect kidney damage, especially in diabetes and high blood pressure. An ACR below 30 mg/g is normal.

Can one abnormal result diagnose CKD?

No. Chronic kidney disease (CKD) is usually diagnosed only when kidney abnormalities persist for at least 3 months. A single abnormal eGFR or urine ACR needs confirmation with repeat testing.

Kidney Function Report Reader | eGFR, Creatinine & Urine ACR

Enter Your Kidney Report Values

Enter the kidney report values you have. eGFR and urine ACR give the most useful combined kidney risk interpretation. If you do not have a value, leave it blank.

eGFR (estimated GFR) — most important value

Serum Creatinine — optional

Urine ACR (albumin-to-creatinine ratio) — optional

Do you have diabetes?

Do you have high blood pressure?

Was this test done during fever, dehydration, vomiting, diarrhoea, severe infection, hospital admission, pregnancy, or soon after a contrast CT scan?

⚠️ This result may be affected by a temporary or acute condition. Please interpret it with medical advice.

Entered Values

Kidney Report Interpretation

🔄 Repeat Testing Note

Kidney disease is usually diagnosed only when abnormal results persist for at least 3 months. A single abnormal eGFR or urine ACR should be confirmed with repeat testing and medical review.

⚠️ Acute Condition Note

This result may be affected by a temporary or acute condition. Please interpret it with medical advice.

ℹ️ Important

This tool provides educational information only. It does not diagnose kidney disease and does not replace medical advice. Always consult your doctor for a full assessment.

This tool provides educational interpretation only. Always consult your doctor for personalised medical guidance.

How to Use This Kidney Report Reader

Enter the values from your kidney blood or urine report. This tool interprets eGFR, serum creatinine and urine ACR together using KDIGO 2024 classification principles. You do not need to have all values — enter what you have.

What Is eGFR?

eGFR (estimated Glomerular Filtration Rate) is a calculated measure of how well your kidneys are filtering waste products from the blood. It is calculated from serum creatinine together with age and sex. eGFR is reported in mL/min/1.73 m² and is the most widely used indicator of kidney filtration function.

eGFR Category Reference Table

eGFR (mL/min/1.73 m²)	Category	Meaning
90 or above	G1	Normal or high — kidney filtration is in the normal range or above.
60 – 89	G2	Mildly decreased — kidney function is mildly reduced.
45 – 59	G3a	Mildly to moderately decreased — filtration is moderately reduced.
30 – 44	G3b	Moderately to severely decreased — significant reduction in filtration.
15 – 29	G4	Severely decreased — kidney function is severely reduced.
Below 15	G5	Kidney failure range — very severely reduced filtration.

What Is Creatinine?

Creatinine is a waste product produced by muscles and removed by the kidneys. When kidney function is reduced, creatinine builds up in the blood. However, serum creatinine alone is not the best measure of kidney function because it is affected by age, sex, muscle mass, diet and hydration. eGFR, which adjusts for age and sex, is more reliable.

What Is Urine ACR?

Urine ACR (albumin-to-creatinine ratio) measures the amount of albumin (a protein) in the urine relative to creatinine. A small amount of albumin in urine can be an early sign of kidney damage — especially in diabetes and high blood pressure — even when the eGFR is still normal. ACR is usually more useful than a simple urine albumin result because it adjusts for how concentrated the urine sample is.

Urine ACR Category Reference Table

ACR (mg/g)	ACR (mg/mmol)	Category	Meaning
Below 30	Below 3	A1	Normal to mildly increased albumin in urine.
30 – 300	3 – 30	A2	Moderately increased albumin. May suggest early kidney damage.
Above 300	Above 30	A3	Severely increased albumin. Medical review recommended.

eGFR and Albuminuria Together

KDIGO 2024 classifies CKD by Cause, GFR category and Albuminuria category. Using eGFR and ACR together gives a much better picture of kidney health than either test alone. A high ACR can indicate kidney damage even when eGFR is above 60. Similarly, a reduced eGFR with a high ACR indicates higher risk than reduced eGFR alone.

Chronic kidney disease (CKD) is defined as abnormalities of kidney structure or function, present for more than 3 months. A single abnormal result alone should not be used to diagnose CKD without confirmation on repeat testing.

When to See a Doctor

Seek medical review if your eGFR is below 60, if your urine ACR is in the A2 or A3 range, if you have diabetes or high blood pressure and any abnormal kidney result, or if you have unexplained swelling, reduced urine output, or other symptoms suggesting kidney problems.

Related Tools & Internal Links

Frequently Asked Questions

Common questions about kidney function tests, eGFR and urine ACR — answered by Sineth Hospitals.

Can one abnormal result diagnose chronic kidney disease?▼

No. CKD is usually diagnosed only when kidney abnormalities persist for at least 3 months. KDIGO 2024 defines CKD as kidney structure or function abnormality present for more than 3 months. A single abnormal eGFR or urine ACR needs to be confirmed with repeat testing. Your doctor will determine the appropriate follow-up.

Can eGFR be normal but urine albumin abnormal?▼

Yes. Albumin in urine can be an early sign of kidney damage even when eGFR is above 60. This is especially common in diabetes and high blood pressure, where kidney damage affecting the tiny filtering units (glomeruli) can begin years before eGFR starts to fall. This is why both eGFR and urine ACR are used together in kidney assessment.

Which is more useful: urine albumin or ACR?▼

ACR is usually more useful because it adjusts the albumin level for urine concentration. A simple urine albumin measurement can vary depending on how concentrated or dilute the urine is at the time of testing. By measuring albumin relative to creatinine in the same urine sample, ACR gives a more reliable and consistent measurement.

Should I repeat an abnormal ACR result?▼

Often yes. Repeat testing is commonly used to confirm that albuminuria is persistent, especially if this is the first abnormal result. A single elevated ACR can sometimes occur due to temporary factors such as fever, intense exercise, urinary tract infection, or dehydration. Confirmation with a repeat test on a different day helps establish whether the abnormality is ongoing.

What can affect eGFR accuracy?▼

eGFR is calculated from serum creatinine and may be less accurate in certain situations, including very high or very low muscle mass, high protein diets, acute illness, dehydration, recent heavy exercise, certain medications, and in people at extremes of age. In these situations, your doctor may order additional kidney function tests such as cystatin C-based eGFR or a 24-hour urine creatinine clearance.