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Albumin in Serum (Mass Concentration)

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

This test measures the amount of albumin, a key protein in your blood that helps maintain fluid balance and supports the immune system.

Quick summary

["Albumin helps keep fluids where they belong in your body and supports important health functions."]

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

Key facts at a glance

LOINC
5917-0
Short code
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Synonyms
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Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

Why Is This Test Done?

Doctors may order albumin tests to check for conditions like kidney disease, liver problems, malnutrition, or fluid imbalances. It can also help monitor how well your body is retaining proteins after surgery or trauma.

What Does a Low or High Albumin Level Mean?

Low albumin levels might suggest problems like kidney disease, liver failure, or poor nutrition, while very high levels are less common but could indicate dehydration or certain medical treatments.

How Is the Sample Collected?

A blood sample is taken from a vein, usually in your arm. You may feel a small pinch, but it won’t cause significant discomfort. The blood is sent to a lab for testing.

What Are Common Causes of Abnormal Results?

Changes in albumin can be due to diet, chronic illnesses, infections, or certain medications. For example, kidney or liver disease, severe burns, or long-term illness may lower albumin levels.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Albumin

Frequently asked questions

What does an albumin test tell me about my health?
It provides insight into your body’s protein status and can help identify conditions affecting your kidneys, liver, or overall nutrition. Your doctor will interpret results in the context of your medical history and symptoms.
How long does it take to get results?
Results are typically available within 1 to 3 business days, depending on your lab’s processing times. Your doctor will discuss them with you during your follow-up visit.
Can I eat or drink before this test?
You may eat and drink normally unless instructed otherwise by your doctor. Fasting is not required for this test.
  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