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Microalbumin Creatinine Ratio (ACR) Calculator

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ACR Result: mg/g

The Microalbumin Creatinine Ratio (ACR) calculator is a valuable tool for assessing kidney health. By measuring the amount of albumin in the urine, it serves as an early warning system for kidney damage. This simple yet effective calculator can be used by healthcare professionals and patients alike to monitor kidney function over time.

Purpose and Functionality

The primary purpose of the ACR calculator is to detect microalbuminuria, a condition where small amounts of albumin, a type of protein, are excreted in the urine. This condition is often an early sign of kidney disease, especially in individuals with diabetes or hypertension. The calculator uses a straightforward formula:

ACR (mg/g) = (Urine Albumin Concentration (mg/L) / Urine Creatinine Concentration (mg/dL)) * 10

  • ACR is the Microalbumin Creatinine Ratio expressed in mg/g.
  • Urine Albumin Concentration is the amount of albumin in the urine, measured in mg/L.
  • Urine Creatinine Concentration is the amount of creatinine in the urine, measured in mg/dL.

Step-by-Step Examples

Example 1: Let's say you have a urine albumin concentration of 30 mg/L and a creatinine concentration of 100 mg/dL. Plugging these numbers into the formula gives us:

ACR = (30 / 100) * 10 = 3 mg/g

This result indicates a normal ACR value, suggesting healthy kidney function.

Example 2: Consider another scenario where the urine albumin concentration is 300 mg/L, and the creatinine concentration is 150 mg/dL:

ACR = (300 / 150) * 10 = 20 mg/g

This value falls within the range of microalbuminuria, suggesting early signs of kidney disease.

Relevant Information Table

ConditionACR Value (mg/g)Implication
NormalLess than 30Healthy kidney function
Microalbuminuria30 to 300Early signs of kidney disease
MacroalbuminuriaMore than 300Advanced kidney disease


The Microalbumin Creatinine Ratio (ACR) calculator is a crucial tool in the early detection and management of kidney disease. Its simplicity and accessibility make it an indispensable resource for individuals at risk of or monitoring kidney health. By providing a quantitative measure of albumin excretion in the urine, the ACR calculator helps in making informed decisions about treatment and management of kidney conditions. Regular use of this calculator can lead to early interventions, improving outcomes for those with kidney disease.

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