Albumin-Creatinine Ratio Unit Converter

The albumin-creatinine ratio (ACR) is a urine test that measures the amount of albumin relative to creatinine in your urine. It is one of the most important markers for detecting early kidney damage.

Albumin is a protein made by the liver that normally stays in the blood. Healthy kidneys filter out waste while keeping albumin in the bloodstream. When the kidneys are damaged, albumin can leak through and appear in the urine.

Creatinine is a waste product from normal muscle breakdown that the kidneys excrete at a relatively constant rate. By comparing albumin to creatinine, the test accounts for variations in urine concentration due to hydration status, time of day, and diet.

Albumin is produced by the liver and normally circulates in the blood. Creatinine comes from the breakdown of creatine in muscles and from dietary protein. The ratio is measured in urine samples, where albumin should be minimal in healthy individuals while creatinine is normally present.