ACR Test in Urine: Albumin Creatinine Ratio Meaning and Levels

The acr test in urine measures the albumin creatinine ratio to detect early kidney damage. Normal levels are typically below 3 mg/mmol. Elevated microalbumin cr ratio suggests early kidney stress or disease, often linked to diabetes or hypertension. Low levels indicate healthy kidney filtration and intact glomerular function.

Contents

→ Result interpretation
→ Check your value Urine Albumin Creatinine Ratio
→ What is Urine Albumin Creatinine Ratio
→ Reference ranges
→ Causes of abnormal values
→ Urine Albumin Creatinine Ratio in combination with other markers
→ Possible symptoms
→ When to see a doctor
→ What to do if abnormal
→ Frequently asked questions
→ Related markers

Result interpretation Urine Albumin Creatinine Ratio

What your result means based on common reference ranges

🟢

Normal

Urine albumin creatinine ratio within normal range indicates intact kidney filtration and absence of chronic kidney disease progression.

🟡

Mildly elevated

Mildly elevated microalbumin cr ratio suggests early kidney damage often linked to diabetes or hypertension-related vascular changes.

🔴

Significantly elevated

Severely high albumin cr ratio indicates significant protein leakage and established chronic kidney disease with reduced filtration capacity.

🔵

Below normal

Low urine albumin levels reflect healthy glomerular membranes and stable renal function without protein loss or inflammation.

🔬 Check your value Urine Albumin Creatinine Ratio

Enter your result and get a personalized interpretation

Urine Albumin Creatinine Ratio, mg/mmol

Sex

Age

What is Urine Albumin Creatinine Ratio?

The urine albumin creatinine ratio (ACR) evaluates how much albumin is lost in urine relative to creatinine, providing a stable measure of kidney function. Unlike simple protein tests, this ratio accounts for urine concentration changes. It is widely used in screening for chronic kidney disease, especially in patients with diabetes, hypertension, or cardiovascular risk. Elevated levels reflect glomerular damage and early nephropathy, while stable low levels confirm normal filtration. The ACR test in urine is a key tool for early intervention and monitoring disease progression.

Reference ranges

Group	Normal range	Unit
Men	0 – 2.5	mg/mmol
Women	0 – 3.5	mg/mmol
Children	0 – 3.5	mg/mmol

Causes of abnormal values

Causes of low Urine Albumin Creatinine Ratio

• Normal kidney function — intact glomeruli prevent albumin loss
• Well-controlled blood pressure — stable filtration pressure reduces leakage risk
• Effective diabetes control — prevents microvascular kidney damage
• Adequate hydration — maintains balanced urine concentration

Causes of high Urine Albumin Creatinine Ratio

• Diabetes mellitus — chronic hyperglycemia damages glomerular vessels causing albumin leakage
• Hypertension — increased pressure forces proteins through kidney filtration barriers
• Chronic kidney disease — structural damage reduces filtration selectivity
• Urinary tract infection — inflammation increases protein excretion temporarily
• Intense physical exercise — transient increase in glomerular permeability
• Dehydration — concentrated urine falsely elevates albumin creatinine ratio
• Fever or systemic illness — inflammatory response increases albumin leakage

Urine Albumin Creatinine Ratio in combination with other markers

🔬

High ACR + Low eGFR Indicates chronic kidney disease with both structural damage and reduced filtration efficiency due to nephron loss.

🔬

High ACR + High HbA1c Reflects diabetic nephropathy driven by chronic hyperglycemia and progressive microvascular injury.

🔬

High ACR + High Blood Pressure Suggests hypertensive nephropathy caused by prolonged vascular stress on glomerular structures.

🔬

High ACR + Elevated Serum Creatinine Indicates worsening renal function with impaired waste clearance and ongoing kidney damage.

Possible symptoms

•Foamy or bubbly urine
•Swelling in legs, ankles, or around eyes
•Frequent urination, especially at night
•Fatigue and reduced energy levels
•Nausea in advanced stages

When to see a doctor

Consult a doctor if urine albumin creatinine ratio exceeds 3 mg/mmol in repeated tests. Seek evaluation if symptoms like swelling or persistent foamy urine appear. Early medical review helps prevent progression of kidney disease.

What to do if abnormal

🩺 Control blood pressure within target range
🍬 Monitor and manage blood glucose levels
💊 Use ACE inhibitors or ARBs if prescribed
🧂 Reduce salt intake to protect kidneys
💧 Maintain proper hydration

The information on this page is intended for general understanding of test results and does not replace medical consultation. Accurate interpretation requires considering other blood markers and individual factors.

Content is based on medical literature and used within the PulseBook analytical system.

Want to understand your full health picture?

PulseBook analyzes all your results together, remembers your history and answers questions 24/7

Try for free →

Fast • Sign in with Google • Free

Frequently asked questions

What is an acr test in urine used for?

The acr test in urine detects small amounts of albumin to identify early kidney damage. It is especially useful for monitoring patients with diabetes or hypertension. The albumin cr ratio provides a more accurate assessment than simple urine protein tests and helps guide early treatment decisions.

What is the normal urine albumin creatinine range?

The urine albumin creatinine range is typically below 3 mg/mmol in the UK. Values above this may indicate kidney stress or early disease. Normal levels confirm healthy filtration, while elevated results require monitoring or further investigation depending on clinical context.

What does urine albumin less than 3 mean?

Urine albumin less than 3 mg/mmol indicates normal kidney function. It means the kidneys are effectively retaining proteins and filtering waste. This level is considered healthy and does not suggest kidney damage or inflammation.

What are urine albumin-creatinine levels chart categories?

Urine albumin-creatinine levels chart typically includes normal (<3 mg/mmol), microalbuminuria (3–30 mg/mmol), and macroalbuminuria (>30 mg/mmol). These categories help assess severity of kidney damage and guide clinical decisions.

What causes micro albumin in urine?

Micro albumin in urine is most commonly caused by diabetes and hypertension. These conditions damage kidney blood vessels, allowing protein leakage. Other causes include infections, exercise, and dehydration, which may temporarily increase albumin levels.

Is urine albumin 3.0 mg l concerning?

Urine albumin 3.0 mg l or a similar ratio threshold suggests early kidney stress and should be monitored. It is not always dangerous but requires follow-up testing to confirm persistence and determine underlying causes such as diabetes or blood pressure issues.

Is urine albumin creatinine ratio a blood test?

No, the urine albumin creatinine ratio is measured in a urine sample, not a blood test. However, it is often combined with blood markers like creatinine and eGFR to evaluate overall kidney function and disease stage.