Albumin-to-Creatinine Ratio (ACR) – ACR measures the amount of albumin (a protein) leaking into your urine, an early sign of kidney damage.
What Albumin-to-Creatinine Ratio measures
Albumin-to-Creatinine Ratio measures early kidney stress – protein in the urine often appears before other markers change.
Typical ranges
Below 30 mg/g is normal; 30-300 mg/g indicates moderately increased albumin; above 300 mg/g is severely increased. Reference ranges differ between laboratories and by age and sex, so always read your result against the range printed on your own report.
What high results can mean
Suggests the kidney’s filters are leaking protein – an early warning, especially with diabetes or high blood pressure.
What low results can mean
Normal, reassuring kidney filtration.
How the test is done
A urine sample (often first morning); no fasting required. At-home collection works well for this marker when the sample is processed by a certified lab.
FAQ
What is a normal Albumin-to-Creatinine Ratio level?
Below 30 mg/g is normal; 30-300 mg/g indicates moderately increased albumin; above 300 mg/g is severely increased. Your ideal target depends on your age, sex, and health history, so review results with a clinician.
What does a high Albumin-to-Creatinine Ratio result mean?
Suggests the kidney’s filters are leaking protein – an early warning, especially with diabetes or high blood pressure.
Can I test Albumin-to-Creatinine Ratio at home?
Yes. A urine sample (often first morning); no fasting required. An at-home sample processed by a certified lab gives reliable results.
This article is educational and not a substitute for medical advice. Discuss your results with a qualified clinician.