Liver FunctionUpdated 2025-12-24Medically Reviewed
Albumin
Everything you need to know about Albumin levels, including what normal ranges look like and what abnormal results might indicate.
Standard Reference Range
Unit: g/dLMale Reference Range
3.5–5.5 g/dL
Female Reference Range
3.5–5.5 g/dL
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Reference ranges may vary slightly between laboratories. Always consult your doctor for interpretation.
What is Albumin?
Albumin is the most abundant protein in blood, produced by the liver. It maintains blood volume, transports hormones and drugs, and indicates nutritional status.
Key Takeaway
Albumin is a key marker of liver synthetic function and overall nutritional status. Low levels indicate chronic illness.
Why is this test performed?
Albumin testing helps:
- Assess liver synthetic function
- Evaluate nutritional status
- Investigate edema or ascites
- Monitor chronic diseases
- Assess protein loss
Interpreting Your Results
Low Levels (Hypoalbuminemia)
Liver Disease:
- Cirrhosis
- Chronic hepatitis
- Liver failure
Protein Loss:
- Kidney disease (nephrotic syndrome)
- Protein-losing enteropathy
- Severe burns
Other Causes:
- Malnutrition
- Inflammation (acute phase response)
- Malabsorption
- Heart failure
High Levels (Hyperalbuminemia)
Rare and usually indicates:
- Dehydration
- High protein diet (mild elevation)
Clinical Significance
- ＜2.5 g/dL: Severe, risk of edema and infections
- 2.5-3.5 g/dL: Moderate deficiency
- ＞5.5 g/dL: Usually dehydration
Related Tests
- Total Protein: Overall protein status
- Albumin/Globulin Ratio: Helps diagnose causes
- Liver enzymes: Assess liver function
- Prealbumin: More sensitive to acute changes
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