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Fluorescent Immunoassay for Avian Influenza Virus Antibodies (Serum/Plasma)

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

This test detects antibodies in your blood that your immune system makes in response to exposure to avian influenza (bird flu) viruses.

Quick summary

["Helps determine if you’ve been exposed to avian flu, though symptoms are rare in humans."]

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

Key facts at a glance

LOINC
39295-1
Short code
FLUAV Ab Egg Yolk Ql ID
Synonyms
FLUAV Ab Egg Yolk Ql ID
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
immune-diffusion
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

This test measures the level of antibodies in your blood that your immune system produces in response to avian influenza, commonly known as bird flu. Antibodies are proteins your body makes to help fight off specific viruses. By detecting these proteins, the test can show whether you have been exposed to the avian flu virus in the past or have developed an immune response after an infection.

The test uses a fluorescent immunoassay to identify specific antibodies produced by your immune system after exposure to avian influenza viruses. These antibodies may appear days to weeks after exposure, depending on the timing and type of exposure.

Your doctor may recommend this test if you have symptoms of a respiratory illness and have had close contact with infected birds or poultry, or if you have traveled to an area where avian flu outbreaks have occurred. It may also be used to monitor workers on poultry farms or in laboratories, or to help public health officials determine how widely the virus has spread in a community.

Healthcare providers may order this test if you’ve had close contact with infected birds, traveled to regions with avian flu outbreaks, or experienced symptoms that could suggest a viral infection (though avian flu in humans is uncommon). It’s not typically used for routine screening.

No special preparation is usually needed before this test. You do not need to fast or stop taking your regular medications unless your doctor gives you specific instructions. Let your healthcare provider know about any medications, supplements, or recent illnesses, and mention any possible exposure to birds. A blood sample will be drawn from a vein in your arm, so wear clothing that allows easy access to your arm.

No special preparation is needed. Bring any recent travel or exposure history to your doctor. The blood sample is drawn from a vein, similar to other blood tests.

After your blood sample is collected, a small bandage or cotton pad will be placed over the puncture site. You may notice slight bruising or tenderness, but this usually goes away within a day or two. You can return to your normal activities right away. Results may take several days, and your doctor will contact you to explain what they mean and whether any follow-up testing or treatment is needed.

You may experience mild bruising or soreness at the injection site. Results are usually available within a few days, but timing depends on the lab.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Understanding Results

Short name

Avian Flu Antibody Test

Frequently asked questions

Positive results indicate the presence of antibodies, suggesting prior exposure to avian influenza. However, this does not confirm active infection. Negative results mean no detectable antibodies were found at the time of testing, but exposure could still have occurred without antibody development.
How long do avian flu antibodies stay in your body after you have been infected or exposed to the virus?
Avian flu antibodies may persist for months to years after exposure, but their exact duration varies. If you suspect recent exposure, retesting may be needed for clarity.
No, this test only detects antibodies, not active infection. For active infection, additional tests like PCR may be used.
What should I do if I have concerns about avian flu exposure?
Contact your healthcare provider immediately if you experience flu-like symptoms (fever, cough, fatigue) after potential exposure. Seek medical attention promptly for evaluation.
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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