Albumin
Disclaimer: Information on this page is for educational purposes. Consult a physician to interpret your test results. Health Vault helps track biomarker trends but does not replace medical advice.
What This Test Measures
Albumin is the main plasma protein synthesized by the liver. It maintains oncotic pressure and transports hormones, drugs, and bilirubin.
Low albumin reflects reduced hepatic synthesis, malnutrition, nephrotic syndrome, or chronic inflammation.
Albumin has a long half-life (~20 days), so changes develop gradually.
Normal Ranges
| Group | Reference Range |
|---|---|
| Men | 3.5–5.2 g/dL (35–52 g/L) |
| Women | 3.5–5.2 g/dL |
| Children | 3.6–5.3 g/dL |
Reference ranges may vary by laboratory and assay method.
Causes of High Levels
- Dehydration
- High-protein diet (rare)
- Corticosteroids
Causes of Low Levels
- Cirrhosis and chronic liver disease
- Nephrotic syndrome
- Malnutrition and malabsorption
- Chronic inflammation
- Pregnancy (physiologic hemodilution)
Test Preparation
- Fasting preferred
- Report edema and weight loss
Related Biomarkers
| Biomarker | Relationship |
|---|---|
| Total Protein | Total plasma protein |
| Total Bilirubin | Liver function |
| Creatinine | Kidney function |
FAQ
How often should I take this test?
Every 3–6 months with chronic disease; screening as indicated.
What should I do if my result is abnormal?
Low albumin requires nutrition, liver, and kidney evaluation. Do not take protein supplements without medical advice.
Last updated: June 2026