Fluorescent antibody test for antibodies against flaviviruses (e.g., dengue, West Nile)
This test detects antibodies that your immune system produces in response to exposure to flaviviruses, such as dengue or West Nile virus. It helps identify whether you may have been infected recently or in the past.
["This test checks for past or recent exposure to flaviviruses that can cause serious illnesses."]
Key facts at a glance
- LOINC
- 7922-8
- Short code
- FLUAV Eng Ab Ser-aCnc
- Synonyms
- FLUAV Eng Ab Ser-aCnc
- 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 looks for specific antibodies (immunoglobulins) in your blood that target flaviviruses. These antibodies develop after your body encounters the virus, either through infection or vaccination. The presence of these antibodies suggests exposure, though timing and levels can vary depending on when infection occurred.
Why It Matters for You
Identifying flavivirus exposure is important for diagnosing infections, especially in areas where these viruses are common. It can also help guide treatment decisions or inform public health measures. This test is often used alongside other diagnostic tools for confirmation.
How the Test Works
The test uses a fluorescent immunoassay (fia) method to detect antibodies in your serum. A sample of your blood is exposed to flavivirus antigens, and if antibodies are present, they bind and fluoresce under a microscope, indicating a positive result.
What to Expect Before the Test
No special preparation is needed for this test. You may have a small needle inserted into your arm to draw blood, which typically takes a few minutes. If you’re on blood-thinning medication, let your healthcare provider know before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Flavivirus antibody screening
Frequently asked questions
How long does it take to get results from this test?
Can this test differentiate between different flaviviruses?
What symptoms might indicate flavivirus 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