Albumin: normal range and what it means
Short answer: The normal albumin range is 3.8 – 5 g/dL for adults. In SI units that is about 38 – 50 g/L. Labs differ a little, so also check the range printed on your report.
Check your value
Where does your albumin sit?
Your result
Type the number from your lab report to see where it sits.
Calculators that use your albumin
Upload your whole lab report and see every marker, with this value already in. Free, no account.
Add the rest of your reportWorked out in your browser. Nothing you type is sent or saved.
Information, not a diagnosis. Talk to a doctor about your result, and sooner if you feel unwell.
The main blood protein, made by the liver — reflects nutrition and liver health.
Normal range
Adult reference range.
- Low< 3.8 g/dL
- Normal3.8 – 5 g/dL
- High≥ 5 g/dL
What it measures
The most abundant protein in blood, made by the liver. It holds fluid inside vessels and carries hormones and drugs, and it drops in liver disease, malnutrition and inflammation.
What moves it
Nutrition, liver synthesis, inflammation and hydration. It falls in prolonged inflammation, which also drags down total calcium readings.
How to bring it into range
Adequate protein intake supports it, but a low result usually reflects illness or inflammation rather than diet.
How fast it responds
Two to three weeks.
Also reported as: serum albumin
Albumin is one of nine markers in biological ageThe free PhenoAge calculator turns it and eight other routine results into your phenotypic age.See where your own value lands
Upload a lab report and HealthOS reads all 88 markers, personalises every range to your sex and age, and tells you which ones actually need attention. Free, no account needed.
Check my blood testGet this marker explained for your own numbers
We’ll send you a short guide to reading this marker in context — what to check alongside it, and when a value is worth acting on.
One email about this marker. No spam, unsubscribe anytime.
We handle your details as described in our Privacy Policy.
Common questions
- What is the normal albumin range?
- The normal albumin range is 3.8 – 5 g/dL for adults. In SI units that is about 38 – 50 g/L. Labs differ a little, so also check the range printed on your report.
- What does a high Albumin mean?
- A value above the reference band means Albumin is outside the range typical for a healthy adult. A single reading is rarely conclusive on its own — what matters is the trend across draws and the other markers around it, which is why HealthOS reads the whole panel together rather than one number at a time.
- How do I improve my Albumin?
- Adequate protein intake supports it, but a low result usually reflects illness or inflammation rather than diet.
Related markers
More in Liver
Reference ranges are general-population guidance compiled from common clinical laboratories, not a diagnosis. Lab-to-lab ranges differ. Always read your results with your doctor.