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Antibody to Flavivirus (e.g., Dengue, Yellow Fever) IgG, Serum

Published: August 9, 2026Updated: August 16, 2026

This test measures the presence of antibodies in your blood that your immune system produces in response to exposure to certain viruses, such as dengue or yellow fever.

Quick summary

["Helps determine past infection or immunity to flaviviruses."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
92809-3
Short code
FLUAV H1 RNA Upper resp Ql NAA+probe
Synonyms
FLUAV H1 RNA Upper resp 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

What This Test Measures

The test detects IgG antibodies, which are part of your immune system’s defense. These antibodies develop after your body has encountered the virus, usually weeks to months after infection. They do not indicate an active infection but suggest prior exposure.

Why It Might Be Ordered

Your healthcare provider may order this test if you have traveled to or live in an area with flavivirus risk, have symptoms like fever, headache, or rash, or if you’ve had a recent exposure to a flavivirus.

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 a few minutes, and you may feel a brief pinch.

What the Results Mean

Positive results indicate past infection and the presence of IgG antibodies. Negative results mean no detectable antibodies at this time, which could mean no prior exposure or recent infection.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

IgG Antibody to Flavivirus

Frequently asked questions

How long does it take to get results?
Results are typically available within 1 to 3 business days, depending on your lab’s processing schedule.
Can I get this test if I’m pregnant?
Yes, this test is generally safe during pregnancy. However, discuss any concerns with your healthcare provider, as they may recommend additional testing or monitoring.
Does this test differentiate between different flaviviruses?
No, this test detects antibodies to flaviviruses broadly. Specific flaviviruses (like dengue or yellow fever) would require additional targeted testing.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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