What is the reference range for Albumin?

The standard reference range for Albumin is 35–50 g/L (3.5–5.0 g/dL), age- and assay-specific.. Reference ranges vary by laboratory and assay platform — interpret in context of the issuing laboratory's stated range.

Which tests measure Albumin?

Albumin is measured in 3 tests on BiomarkersLabs.com, including Comprehensive Metabolic Panel, Comprehensive Metabolic Panel with Adjusted Calcium, Plasma, Comprehensive Metabolic Panel, Plasma.

Biomarker Reference · Alb

What does the Albumin test measure?

Q: Why is Albumin measured?

Hypoalbuminaemia reflects decreased synthesis (liver disease, malnutrition, inflammation), increased loss (nephrotic syndrome, protein-losing enteropathy, burns), or haemodilution. Low albumin is an independent predictor of poor outcomes in hospitalised patients and chronic disease. It also affects interpretation of total calcium, necessitating correction formulas or ionised calcium measurement.

Albumin (Alb) is a clinical biomarker used in metabolic-diabetes assessment. Albumin is the most abundant plasma protein, synthesised exclusively by the liver with a half-life of approximately 20 days. It is measured in 3 laboratory tests on BiomarkersLabs.com.

Reference Range: 35–50 g/L (3.5–5.0 g/dL), age- and assay-specific.
Units: g/dL, g/L
Measured In: 3 tests
Category: Metabolic

Functional medicine optimal≥35 g/L; mild hypoalbuminaemia is common in acute illness, but persistent values <35 g/L warrant investigation of liver, renal, nutritional, or inflammatory causes.

What is Albumin?

Albumin is the most abundant plasma protein, synthesised exclusively by the liver with a half-life of approximately 20 days. It maintains oncotic pressure, transports hormones, fatty acids, bilirubin, and drugs, and serves as a readily mobilised amino-acid reserve. Plasma albumin concentration reflects synthesis rate, distribution volume, and losses (renal, gastrointestinal, or into third spaces).

Why is Albumin measured?

Hypoalbuminaemia reflects decreased synthesis (liver disease, malnutrition, inflammation), increased loss (nephrotic syndrome, protein-losing enteropathy, burns), or haemodilution. Low albumin is an independent predictor of poor outcomes in hospitalised patients and chronic disease. It also affects interpretation of total calcium, necessitating correction formulas or ionised calcium measurement.

Reference ranges

Standard reference: 35–50 g/L (3.5–5.0 g/dL), age- and assay-specific.
Functional medicine optimal: ≥35 g/L; mild hypoalbuminaemia is common in acute illness, but persistent values <35 g/L warrant investigation of liver, renal, nutritional, or inflammatory causes.
Units: g/dL, g/L

Reference ranges vary by laboratory and assay platform. Interpret in context of the issuing laboratory's stated range.

Tests that measure Albumin

3 tests on BiomarkersLabs.com include this biomarker.

BML-MET-024Comprehensive

Comprehensive Metabolic Panel

Albumin reference range in this test: 3.5–5.0 g/dL; synthesis and nutritional marker.

BML-MET-026Comprehensive

Comprehensive Metabolic Panel with Adjusted Calcium, Plasma

Albumin reference range in this test: 35–50 g/L (3.5–5.0 g/dL), age- and assay-specific.

BML-MET-025Comprehensive

Comprehensive Metabolic Panel, Plasma

Albumin reference range in this test: 3.5–5.0 g/dL (laboratory-specific).

Related clinical conditions

Related Biomarkers

Frequently measured alongside

Estimated Glomerular Filtration RateeGFR6 tests SodiumNa6 tests PotassiumK6 tests ChlorideCl6 tests Total ProteinTP3 tests Total BilirubinTBIL5 tests Alkaline PhosphataseALP4 tests Aspartate AminotransferaseAST5 tests

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