Microalbumin Creatinine Ratio Test
This test compares the amount of albumin (a protein) to creatinine (a waste product) in your urine. High levels of albumin can be an early sign of kidney disease.
What this test measures
The microalbumin creatinine ratio test measures the levels of the protein albumin in your urine and compares them to your levels of creatinine. This ratio helps show if your kidneys are letting too much albumin pass into your urine.
What your results mean
Reference ranges vary by laboratory and by your age and sex. MedlinePlus does not publish a single normal range for this test — always read your result against the range printed on your own lab report and discuss it with your provider.
Higher-than-normal results
Higher or increasing amounts of albumin in your urine usually mean you have more serious kidney disease that's likely to get worse faster, and a higher risk for developing problems with your heart and blood vessels.
Frequently asked questions
What is a microalbumin creatinine ratio test?
It is a urine test that checks the levels of the protein albumin compared to creatinine. It helps detect early signs of kidney disease.
Why might I need this test?
You may need it if you have a high risk for kidney disease, such as having diabetes, high blood pressure, heart disease, obesity, or a family history of kidney disease.
What does an abnormal result mean?
An abnormal result may mean your kidneys are letting too much albumin into your urine. But temporary increases can happen from exercise, fever, or inflammation, so repeat tests are needed.
How is the test done?
You provide a urine sample, which is sent to a lab to measure albumin and creatinine levels.
What happens if I have high albumin levels?
Your provider will likely order more tests, such as an eGFR blood test. If you have early kidney disease, steps can be taken to reduce albumin and protect your health.
Related lab tests
Sources
- MedlinePlus: Microalbumin Creatinine Ratio — NIH MedlinePlus
Last updated . Information is aggregated from official public sources and is not a substitute for professional medical care.