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Serum or plasma concentration of albumin by nephelometry

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 helps keep fluids in your bloodstream and supports healthy tissues."]

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

Key facts at a glance

LOINC
109026-5
Short code
ENA SM-B Ab Msmt Ser
Synonyms
ENA SM-B Ab Msmt Ser
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

What Albumin Does in Your Body

Albumin is a crucial protein that helps distribute fluids throughout your body, supports nutrient transport, and contributes to your immune system’s ability to fight infections. Low levels may indicate conditions like kidney disease, malnutrition, or severe illness, while high levels might suggest dehydration or certain liver disorders.

Why You Might Need This Test

Your doctor may order an albumin test to check for kidney function, liver health, nutritional status, or to monitor conditions like chronic kidney disease, heart failure, or severe infections. It’s also used in some fluid balance assessments.

How the Test Works

A small blood sample is taken, and the albumin protein is measured using a technique called nephelometry, which detects light scattering to quantify its concentration in your serum or plasma.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for 8–12 hours if your test involves a different specimen (like urine). Wear comfortable clothing and plan to stay near the testing site for a short time.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Albumin Level

Frequently asked questions

What does an abnormal albumin result mean?
Low albumin levels may signal underlying health issues like kidney disease, liver problems, or malnutrition, as your body may not be producing enough or losing it through urine. High levels could indicate dehydration or conditions that reduce fluid loss from tissues.
Can diet affect albumin test results?
Yes, diet can influence albumin levels. Eating a balanced diet rich in protein and vitamins may help maintain normal levels, while poor nutrition or excessive protein loss (e.g., from kidney disease) can lower them.
How often should I get this test?
Your doctor will determine how often you need this test based on your health condition. Regular monitoring may be needed if you have chronic illnesses like kidney disease or liver disorders.
  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