Serum or Plasma Immunoassay for Anti-Human Influenza Virus Antibodies (Qualitative or Quantitative Probe)
This test detects antibodies your immune system makes in response to exposure to the influenza virus. It helps determine if you’ve been infected or vaccinated.
["Assesses past or current immune response to influenza virus infection or vaccination."]
Key facts at a glance
- LOINC
- 82167-8
- Short code
- FLUAV H1 RNA Nph Ql NAA+n-prb
- Synonyms
- FLUAV H1 RNA Nph Ql NAA+n-prb
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- non-probe-amp-tar
- 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
How the Test Works
Your healthcare provider will collect a blood sample (serum or plasma) to analyze. The test uses an immunoassay to detect specific antibodies (IgM, IgG, or both) against influenza virus proteins. Results may be qualitative (positive/negative) or quantitative (measuring antibody levels).
Why It’s Ordered
Doctors may order this test to diagnose recent influenza infection, evaluate vaccine effectiveness, or screen for exposure in high-risk groups (e.g., immunocompromised patients, healthcare workers). It’s also used in outbreak investigations.
What to Expect Before the Test
No special preparation is needed. You may have mild discomfort from a small needle prick, but blood tests are quick and typically done in a clinic or lab. Avoid alcohol or strenuous activity before the draw if instructed.
What to Expect After the Test
Results are usually ready within 1–3 business days. You’ll receive a written report from your provider. If you’re tested for infection, positive results may indicate recent exposure; negative results don’t rule out infection if symptoms persist.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results for certain antibodies (e.g., IgM) often correlate with recent infection, while IgG antibodies suggest past exposure or vaccination. High antibody titers may indicate chronic infection or immune response monitoring. False positives can occur with cross-reactivity, so confirmatory testing may be needed in some cases.
Short name
Influenza Antibody Test
Frequently asked questions
How long does it take to get results?
Can I get this test at home?
What does a positive result mean?
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