Antibody to Flavivirus (e.g., Dengue, Yellow Fever) by Immunoassay
This blood test checks for antibodies to viruses like dengue or yellow fever, which your immune system makes after infection. It helps determine if you’ve been exposed to these viruses.
["This test helps diagnose past or recent flavivirus infections."]
Key facts at a glance
- LOINC
- 7924-4
- Short code
- FLUAV Lenin Ab Ser-aCnc
- Synonyms
- FLUAV Lenin 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
Why This Test Is Done
Your doctor may recommend this test if you’ve traveled to areas where flaviviruses are common, have symptoms like fever, headache, or body aches, or if you’ve been exposed to a known flavivirus. It can also be used to confirm a diagnosis in people who’ve already been vaccinated or have other health conditions that affect how the body responds to infections.
What to Expect Before the Test
No special preparation is needed. You’ll have a small needle inserted into your arm to draw blood. It usually takes about 15 minutes. If you’re nervous, let your healthcare provider know so they can help make it more comfortable.
What Happens During the Test
The blood sample is sent to a lab where it’s tested using an immunoassay method to detect flavivirus antibodies. Results are typically available within a few days.
What the Results Mean
A positive result means your body has made antibodies against flaviviruses, suggesting you’ve likely been infected. A negative result means no detectable antibodies were found, which could mean you haven’t been infected recently or haven’t developed antibodies yet.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results can confirm a flavivirus infection, especially in people who have symptoms like fever, rash, or joint pain. It can also help distinguish between different flaviviruses or rule out other infections. Negative results don’t always mean you’re completely safe—some people may not develop detectable antibodies, so ongoing monitoring or retesting may be needed.
Short name
Flavivirus Antibody Test
Frequently asked questions
How long does it take to get my test results?
What does a positive result mean?
Can I still get infected if my test is negative?
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