Eastern Equine Encephalitis Virus IgG and IgM Antibodies, Serum — Immunoassay
A serum immunoassay detects IgG and IgM antibodies to eastern equine encephalitis virus, helping evaluate previous exposure or a possible recent infection.
["Detectable antibodies may indicate previous exposure or a recent eastern equine encephalitis virus infection, but results must be interpreted with symptoms, timing, and other testing."]
Key facts at a glance
- LOINC
- 24006-9
- Short code
- EEEV IgG+IgM Ser-Imp
- Synonyms
- EEEV IgG+IgM Ser-Imp
- Category
- liver
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82784
- 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 is this test?
This blood test looks for IgG and IgM antibodies against eastern equine encephalitis virus, a mosquito-borne virus that can cause inflammation of the brain. It detects the body's immune response rather than the virus itself.
Why might I need this test?
Your clinician may order this test if you have fever, headache, confusion, seizures, or other neurologic symptoms after potential mosquito exposure. It may also be used when infection with this virus is suspected despite a low initial suspicion.
How is the test performed?
A blood sample is collected, and the serum is analyzed using an immunoassay to detect virus-specific IgG and IgM antibodies. Because early antibody testing may be negative, repeat testing on a later sample may be needed.
How do I prepare for the test?
Fasting is usually not required for this serum test unless your clinician gives different instructions. Tell your clinician about recent travel, mosquito exposure, prior infections, vaccination history, and when your symptoms began.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
IgG antibodies generally suggest exposure to eastern equine encephalitis virus at some time, while IgM antibodies may support a recent infection. However, IgM can remain detectable for an extended period or occur with other infections, so a positive result alone does not establish active disease. Results are interpreted alongside symptom timing, possible exposure, repeat antibody testing, and other laboratory findings.
Short name
Eastern equine encephalitis virus antibodies
Frequently asked questions
What does a positive IgG result mean?
What does a positive IgM result mean?
Can this test rule out eastern equine encephalitis virus 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