Your kidneys play a significant role in your health by recycling the reusable components in your blood (such as minerals) and by discarding unneeded waste products from your blood through urine. Albumin is a major protein and is one of these unneeded products. When your kidneys are functioning correctly, virtually no albumin should appear in your urine.
This test screens for kidney function problems by calculating your albumin to creatinine ratio (ACR). ACR is calculated by dividing the amount of albumin by the amount of creatinine in the urine. If the ratio shows more albumin in the urine than there should be it may indicate kidney damage.
Preparation: No special preparation needed.
CDC estimates about 37 million U.S. adults have chronic kidney disease (CKD).
About 90% of people with kidney damage or mildly reduced kidney function are not aware of having CKD.¹
1. Centers for Disease Control and Prevention. Chronic Kidney Disease in the United States, 2021. Updated July 12, 2022. Accessed December 19, 2022. https://www.cdc.gov/kidney-disease/php/data-research/
2. National Kidney Foundation. ACR. National Kidney Foundation website. Accessed January 6, 2023. https://www.kidney.org/kidneydisease/siemens_hcp_acr
3. National Kidney Foundation. What is the Difference Between sCR, eGFR, ACR, and BUN? Accessed October 2, 2023. https://www.kidney.org/newsletter/what-difference-between-scr-egfr-acr-and-bun
4. National Kidney Foundation. Albuminuria (proteinuria). Accessed October 2, 2023. https://www.kidney.org/atoz/content/albuminuria
<p>1. Centers for Disease Control and Prevention. Chronic Kidney Disease in the United States, 2021. Updated July 12, 2022. Accessed December 19, 2022. <a href="https://www.cdc.gov/kidney-disease/php/data-research/" target="_blank" title="Chronic Kidney Disease" rel="noopener noreferrer">https://www.cdc.gov/kidney-disease/php/data-research/</a></p> <p>2. National Kidney Foundation. ACR. National Kidney Foundation website. Accessed January 6, 2023. <a href="https://www.kidney.org/kidneydisease/siemens_hcp_acr" target="_blank" title="National Kidney Foundation" rel="noopener noreferrer">https://www.kidney.org/kidneydisease/siemens_hcp_acr</a></p> <p>3. National Kidney Foundation. What is the Difference Between sCR, eGFR, ACR, and BUN? Accessed October 2, 2023. <a href="https://www.kidney.org/newsletter/what-difference-between-scr-egfr-acr-and-bun" target="_blank" title="National Kidney Foundation" rel="noopener noreferrer">https://www.kidney.org/newsletter/what-difference-between-scr-egfr-acr-and-bun</a> <br /> </p> <p>4. National Kidney Foundation. Albuminuria (proteinuria). Accessed October 2, 2023. <a href="https://www.kidney.org/atoz/content/albuminuria" target="_blank" title="National Kidney Foundation. Albuminuria (proteinuria)" rel="noopener noreferrer">https://www.kidney.org/atoz/content/albuminuria</a><br /> </p>
A calculation that divides the amount of albumin measured in the urine by the urine creatinine level to correct for urine concentration.
View your easy-to-read results online in your Labcorp Patient™ account, including Linked Accounts. For certain results that require prompt attention, you will also be contacted by phone or mail.
Our ACR kidney test calculates your ACR by dividing the amount of albumin by the amount of creatinine present in your urine. A high ACR means there is more albumin in the urine than should be, a condition known as albuminuria. Increased albuminuria can be a sign that kidneys are not functioning normally and may be damaged.3 Albuminuria is a risk factor for developing certain conditions, which may include kidney disease and cardiovascular disease.
You should consult with a healthcare provider if you have any questions about your results, or if your results are outside of the standard range. Your provider may want you to repeat this test if your results are elevated.
Your testing will be performed in a CLIA-certified clinical laboratory. Labcorp provides leading-edge medical laboratory tests and services through a national network of primary clinical laboratories and specialty testing laboratories. Our labs perform regular quality assurance testing to ensure our results are accurate.
Your results will be provided to you through our secure online portal to view or print. Results are also made available through a secure portal to the independent healthcare provider who placed your test order. If you are accessing your results through your Labcorp Patient™ account, all users linked to the account will have access to all OnDemand test results. Results may also be provided to a local, state, and/or federal health authority; for example, many states require the testing laboratory and physician to report test results for certain communicable diseases, such as COVID-19, to local or state health departments.
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