Antibody to Flavivirus, Qualitative (IgM)
This test detects antibodies to flaviviruses, which are viruses including those responsible for diseases like dengue, yellow fever, or West Nile virus. It helps identify if you’ve been exposed to one of these viruses.
["This test can help diagnose recent flavivirus infections by checking for IgM antibodies."]
Key facts at a glance
- LOINC
- 94395-1
- Short code
- FLUAV H1 09 pan RNA Lo Rsp Ql NAA+probe
- Synonyms
- FLUAV H1 09 pan RNA Lo Rsp Ql NAA+probe
- 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
- 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 healthcare provider may recommend this test if you’ve had symptoms like fever, headache, joint or muscle pain, or rash—especially if you’ve traveled to or lived in an area where flaviviruses are common. It can also be used to confirm a suspected flavivirus infection in people with known exposure.
How the Test Works
The test uses a blood sample to check for IgM antibodies against flaviviruses. IgM antibodies appear shortly after infection and can help confirm a recent exposure, though they may not be present in all cases.
What to Expect Before the Test
No special preparation is needed. You may have a small needle inserted into your arm to draw blood, which usually takes a few minutes. If you’re pregnant, have a bleeding disorder, or take blood-thinning medications, let your provider know before the test.
What to Expect After the Test
You may feel slight bruising or soreness at the injection site, but this usually goes away quickly. Apply gentle pressure to the area to help reduce any swelling or discomfort.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
A positive result for flavivirus IgM antibodies suggests recent infection, which can guide treatment, monitoring, or prevention of complications. However, false positives can occur, so additional testing (like PCR or virus isolation) may be needed for confirmation. Results should be interpreted by a healthcare provider in the context of your symptoms, travel history, and other factors.
Short name
Flavivirus IgM Antibody (Qualitative)
Frequently asked questions
What does a positive result mean?
Can I get this test if I’ve already had a flavivirus vaccine?
How long after infection might I get a positive result?
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