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Fluorescent Immunoassay for Antibodies to Avian Influenza Virus Nucleoprotein (AIV NP)

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

This test measures antibodies in your blood that may indicate past exposure to avian influenza (bird flu). It helps assess immunity or detect exposure to the virus.

Quick summary

["This test checks for immunity or exposure to avian influenza, important for travelers or those in high-risk areas."]

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

Key facts at a glance

LOINC
22822-1
Short code
FLUAV Ab Ser Ql IA
Synonyms
FLUAV Ab Ser Ql IA
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia
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 This Test Is Done

Your healthcare provider may recommend this test if you’ve traveled to regions with avian influenza outbreaks, have been exposed to infected birds, or are at higher risk for infection. It helps monitor immunity or detect potential exposure to the virus.

What to Expect Before the Test

No special preparation is needed. A blood sample is taken from a vein in your arm. The test uses a simple blood draw, similar to other routine blood tests.

How the Test Works

The test uses a fluorescent immunoassay (FIA) to detect antibodies specific to avian influenza’s nucleoprotein. These antibodies develop after exposure to the virus, indicating past infection or immunity.

What the Results Mean

Results are qualitative (positive or negative). A positive result suggests past exposure or immunity, while a negative result means no detectable antibodies were found at this time.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Avian Influenza Antibody Test (FIA)

Frequently asked questions

How long does it take to get results from this test?
Results are typically available within 24 to 72 hours, depending on lab processing times. Your healthcare provider will contact you once results are ready.
Can I get this test if I’ve never been exposed to avian influenza?
Yes, this test can be done even if you’ve never been exposed. It measures general antibody levels to detect past infection or immunity, regardless of prior exposure history.
Is there any risk or discomfort with this blood draw?
There may be mild discomfort or bruising at the injection site, similar to other blood tests. Rarely, a small pinch or slight swelling can occur, but serious risks are uncommon.
  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