Antibody to Asian Fluavirus (H5N1) Hemagglutinin, Immunoassay
This test detects antibodies in your blood that may have developed in response to exposure to the avian influenza A (H5N1) virus, also known as Asian fluavirus. It helps assess past or potential infection.
["This test checks for immune system response to a specific virus that can affect birds and, rarely, humans."]
Key facts at a glance
- LOINC
- 81320-4
- Short code
- FLUAV H5 Asian RNA Ct Resp Qn NAA H5a
- Synonyms
- FLUAV H5 Asian RNA Ct Resp Qn NAA H5a
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar-primer-probe-set-h-a
- 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 Might Be Ordered
Your healthcare provider may recommend this test if you’ve had recent contact with birds, poultry, or areas where avian influenza has been reported. It could also be used in outbreak investigations or during travel to high-risk regions. Rarely, it may be part of routine surveillance in certain populations.
What to Expect Before the Test
No special preparation is needed. You’ll likely have a simple blood draw from a vein in your arm. If you’re tested for exposure in a clinical setting, follow any specific instructions your provider gives you.
What the Test Results Mean
Positive results indicate the presence of antibodies, suggesting you may have been exposed to the virus at some point. Negative results mean no detectable antibodies were found. Consult your healthcare provider for interpretation—results don’t confirm active infection but can help track exposure history.
Common Reasons for Testing
This test is primarily used in public health surveillance, outbreak investigations, or during outbreaks where avian influenza is a concern. It’s not typically part of routine health checks unless you’ve had specific exposure risks.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
While this test doesn’t diagnose active infection, it plays a role in monitoring exposure risks, especially in travelers, poultry workers, or those in regions with known outbreaks. Early detection of past exposure can inform preventive measures or further testing if needed. Always discuss results with your provider for personalized guidance.
Short name
Asian Fluavirus H5N1 Antibody Test
Frequently asked questions
Will this test show if I currently have the virus?
How soon after exposure might I get positive results?
Can I get this test at home?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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