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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 key protein in your blood that helps maintain fluid balance and supports immune function.

Quick summary

["Albumin levels can indicate overall protein status and kidney function."]

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

Key facts at a glance

LOINC
56723-0
Short code
ENA RNP Ab Ser Ql IB
Synonyms
ENA RNP Ab Ser Ql IB
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ib
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 one of the most abundant proteins in your blood. It plays several important roles, including helping to distribute nutrients, maintaining proper fluid balance in your tissues, and supporting your immune system by carrying small molecules like hormones and medications. Low albumin levels may suggest conditions like malnutrition, liver disease, or kidney problems.

Why Your Doctor Might Order This Test

Doctors may check albumin levels to assess nutritional status, monitor chronic conditions like kidney disease or liver disease, or evaluate fluid balance in patients with heart or lung conditions. It can also be part of a general health check or screening for certain medical issues.

How the Test Works

This test involves collecting a blood sample, which is then analyzed using a nephelometry method. Nephelometry measures how much light is scattered by particles in the sample, allowing the lab to determine the concentration of albumin in your blood.

What to Expect Before the Test

There are usually no special preparations needed for this test. You may have a small needle inserted into your arm to draw blood, and you’ll typically feel a brief pinch. If you’re on blood thinners or have a history of bleeding issues, let your doctor know before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Low albumin levels (hypoalbuminemia) can signal underlying health problems, such as malnutrition, liver disease, kidney disease, or severe infections. High albumin levels are less common but may occur in conditions like dehydration or certain inflammatory diseases. Your doctor will interpret results in the context of your overall health and medical history.

Short name

Albumin (serum/plasma)

Frequently asked questions

What causes low albumin levels?
Low albumin levels can result from conditions that reduce protein production in the liver (e.g., liver disease), increased protein loss through the kidneys (e.g., kidney disease), malnutrition, or severe infections, burns, or chronic illnesses. It may also be due to certain medications or medical treatments.
What does it mean if my albumin level is low?
If your albumin level is low, your doctor may investigate further to identify the underlying cause. This could involve additional tests (e.g., liver function tests, kidney function tests) or a review of your diet, medications, or medical history. Treatment may focus on addressing the root cause, improving nutrition, or managing symptoms.
Can albumin levels change with diet?
Yes, diet can affect albumin levels. Eating a balanced diet rich in protein (including lean meats, eggs, dairy, and plant-based proteins) can help maintain healthy albumin levels. Poor nutrition, especially low protein intake, may lead to lower albumin levels. Your doctor or dietitian can provide personalized advice if needed.
  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