The ACR (Urine) test, also known as the Albumin–Creatinine Ratio, is a highly sensitive diagnostic investigation used to detect early kidney damage, particularly in individuals who may not yet show symptoms. This test measures the amount of albumin (a type of protein) in the urine relative to creatinine, allowing for accurate assessment even from a single urine sample.

Under normal conditions, healthy kidneys prevent albumin from leaking into the urine. When the kidneys’ filtering units (glomeruli) are damaged, small but abnormal amounts of albumin begin to appear in the urine—a condition known as microalbuminuria. The ACR test is specifically designed to identify this early-stage leakage, making it a critical tool for preventive and long-term health monitoring.

This test is especially important for individuals with diabetes, hypertension, and chronic kidney disease, as kidney damage in these conditions often develops silently. Detecting abnormal ACR levels early allows timely medical intervention, lifestyle modification, and treatment adjustments that can slow or even prevent progression to severe kidney failure.

Unlike standard urine protein tests, the ACR test corrects for urine concentration by comparing albumin with creatinine levels, ensuring more reliable and consistent results regardless of hydration status. For this reason, it is widely recommended as part of routine health screening for high-risk patients.

The ACR (Urine) test is also useful in:

• Monitoring kidney involvement in heart disease
• Evaluating kidney stress during long-standing infections
• Assessing overall renal health in preventive health check-ups

Because it requires no specific preparation and uses a simple urine sample, the test is convenient, non-invasive, and suitable for repeated monitoring over time.

Why ACR (UrINE) Matters

• Detects kidney damage before symptoms appear
• Essential for diabetes and blood pressure management
• Helps prevent progression to chronic kidney disease
• Supports early clinical decision-making and treatment planning

The ACR (Urine) test plays a vital role in protecting long-term kidney health and is a cornerstone investigation in modern preventive and metabolic healthcare.