What this marker measures
Albumin is a useful marker of nutritional status and chronic liver function. Because it has a half-life of about 20 days, it reflects nutritional and liver health over weeks rather than days.
High or low: what it can mean
High Albumin
High albumin is almost always due to dehydration, which concentrates the blood. It is generally not a sign of excess albumin production.
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Low Albumin
Low albumin (hypoalbuminemia) can result from reduced liver production (liver disease, malnutrition) or increased loss (kidney disease, severe inflammation). It can contribute to fluid accumulation in tissues.
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Lifestyle considerations
- •Adequate protein intake from varied dietary sources supports albumin production
Frequently asked questions
What is Albumin?
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Albumin is the most abundant protein in blood, produced by the liver. It carries hormones, vitamins, and drugs through the bloodstream and helps maintain fluid balance.
What does Albumin measure?
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Albumin is a useful marker of nutritional status and chronic liver function. Because it has a half-life of about 20 days, it reflects nutritional and liver health over weeks rather than days.
What does high Albumin mean?
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High albumin is almost always due to dehydration, which concentrates the blood. It is generally not a sign of excess albumin production.
What does low Albumin mean?
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Low albumin (hypoalbuminemia) can result from reduced liver production (liver disease, malnutrition) or increased loss (kidney disease, severe inflammation). It can contribute to fluid accumulation in tissues.
What supports healthy Albumin levels?
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Adequate protein intake from varied dietary sources supports albumin production
Related biomarkers
Editorial note
LabTestly explains lab markers using plain-English educational content. Reference ranges may vary by laboratory and should be interpreted with a clinician.
Educational content · Editorially reviewed for clarity · Last updated
Common sources used for lab-test education
Not medical advice
This page is for general understanding only and does not replace medical advice from your clinician. Reference ranges can vary by laboratory, age, sex, pregnancy status, medications, and clinical context.