what is the point of a urine protein creatinine ratio
The urine albumin test or albumin/creatinine ratio (ACR) is used to screen people with chronic conditions, such as diabetes and high blood pressure (hypertension) that put them at an increased risk of developing kidney disease.
However, in any given spot urine sample, since the amount of water diluting the albumin (or protein) is the same as the amount of water diluting the creatinine, the ratio provides an accurate assessment of the degree of albuminuria (or proteinuria).