Albumin Creatinine Ratio Calculator ACR

What Is Albumin-to-Creatinine Ratio?

Urine albumin-to-creatinine ratio (ACR) detects albuminuria from a single urine sample. It is a key marker for chronic kidney disease screening. Related tools: Creatinine Clearance Calculator and BUN Creatinine Ratio Calculator.

$$ACR = \frac{\text{urine albumin (mg/dL)}}{\text{urine creatinine (g/dL)}}$$

Result unit is mg/g. Categories: A1 below 30, A2 from 30 to 300, A3 above 300 mg/g.

Why use ACR instead of 24-hour urine protein?

ACR from one sample is practical and widely accepted for screening and monitoring kidney disease.

When should I collect the urine sample?

Morning first void after proper cleaning is commonly recommended.

How do I convert creatinine units?

1 mmol/L creatinine is about 11.3 mg/dL. Divide mg/dL by 100 to get g/dL for the ratio.

What does category A2 mean?

Moderately increased albuminuria, often called microalbuminuria, between 30 and 300 mg/g.

Who should check ACR regularly?

People with diabetes, hypertension, heart disease, or family history of kidney disease.