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Serum or plasma concentration of albumin (substance concentration)

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of albumin, a protein found in your blood, which helps maintain fluid balance and supports immune function.

Quick summary

["Albumin levels can indicate overall health, hydration status, or kidney function."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
111862-9
Short code
Sed-analg-anesth Endscpy
Synonyms
Sed-analg-anesth Endscpy
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
endoscopy
CPT
86038
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What Albumin Does in Your Body

Albumin is a key protein that helps distribute fluids throughout your body and supports the transport of substances like hormones and medications. It also plays a role in maintaining blood pressure and protecting tissues from damage caused by inflammation.

Why It’s Tested

Doctors may order albumin tests to check for conditions like kidney disease, liver problems, malnutrition, or dehydration. Low levels might suggest poor nutrition, severe illness, or organ dysfunction.

How the Test Works

A blood sample is taken, and the albumin protein is measured using an immunoassay or similar method to determine its concentration in your serum or plasma.

What to Expect Before the Test

No special preparation is needed, but inform your doctor about any medications or conditions that could affect results, such as kidney disease or liver issues.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Albumin Level

Frequently asked questions

Low albumin levels may signal malnutrition, chronic liver disease, kidney problems, or severe infections, while very high levels are less common but could indicate dehydration or certain inflammatory conditions.
A low albumin result might prompt further testing to explore underlying causes, such as dietary habits, liver function tests, or kidney function evaluations.
What does a normal albumin level mean?
Normal results vary by lab and individual, but albumin is typically measured in grams per deciliter (g/dL). A result within the reference range usually indicates healthy protein levels, but your doctor will discuss your specific results with you.
Can diet affect albumin test results?
Yes, diet can influence albumin levels. Poor nutrition, especially low protein intake, may lead to lower albumin. Maintaining a balanced diet can help support normal protein levels, but your doctor will consider other factors when interpreting results.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy