Fluorescent Immunoassay for Anti-Viral Antibodies (Serum/Plasma)
This test measures antibodies in your blood that your immune system produces in response to a virus. It helps determine if you’ve been exposed to or recovered from a viral infection.
["Checks your immune response to past or current viral exposure."]
Key facts at a glance
- LOINC
- 47454-4
- Short code
- FLUAV H5 Ab Titr Ser
- Synonyms
- FLUAV H5 Ab Titr 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 This Test Measures
The test detects specific antibodies (immunoglobulins) produced by your immune system in response to viral antigens. These antibodies can indicate exposure to a virus, such as influenza, COVID-19, or others, depending on the specific viral target being tested. The method uses fluorescence to identify and quantify these antibodies in your serum or plasma sample.
Why It’s Done
Healthcare providers may order this test to diagnose or monitor viral infections, assess immunity after vaccination, or evaluate immune response in certain medical conditions. It can also be used in research or epidemiological studies to track viral spread.
Sample Collection and Preparation
A blood sample is typically drawn from a vein in your arm. The blood is processed to separate serum or plasma, which is then tested for the presence of viral antibodies. This process usually takes a few minutes, and you may feel a slight pinch during the draw.
Test Results Interpretation
Results are qualitative (positive or negative) and indicate whether your immune system has detected and responded to the virus. A positive result suggests exposure or infection, while a negative result means no detectable antibodies were found in this sample.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Anti-Viral Antibody Test
Frequently asked questions
This test plays a critical role in diagnosing viral infections early, guiding treatment decisions, and monitoring recovery. It can also help determine if someone has built immunity through natural infection or vaccination. However, it’s important to note that antibody levels can vary over time and may not always correlate directly with current infection status.
How long does it take to get results from this test?
Can this test be used to confirm a recent infection?
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