Eastern Equine Encephalitis Virus IgG Antibody Titer, Serum — Immunofluorescence
Measures EEEV-specific IgG antibodies in serum to help evaluate exposure to the mosquito-borne eastern equine encephalitis virus.
["This blood test can help identify a previous or current EEEV infection, but results may require confirmatory testing."]
Key facts at a glance
- LOINC
- 10896-9
- Short code
- EEEV IgG Titr Ser IF
- Synonyms
- EEEV IgG Titr Ser IF
- Category
- liver
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 8
- Ref high
- 61
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- if
- CPT
- 82977
- SNOMED
- 3110003
- 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 test measures antibodies of the IgG class against the eastern equine encephalitis virus (EEEV) in your blood. IgG antibodies usually develop after exposure and may remain detectable for years.
Why might I need this test?
Your clinician may order it when a mosquito-borne illness with fever, severe headache, stiff neck, confusion, or seizures is suspected. It may also be used when there is concern about exposure during travel or an outbreak.
How is the test performed?
A blood sample is collected and separated to obtain serum. The laboratory uses an immunofluorescence method to measure EEEV-specific IgG antibodies and may report a titer, which compares antibody levels with laboratory test materials.
How do I prepare for the test?
No special preparation or fasting is usually required. Tell your clinician about recent travel, mosquito exposure, symptoms, and any similar infections because these details can help interpret the result.
Reference range
Adult males: 8-61 U/L; Adult females: 5-36 U/LN/A
No special preparation required. Avoid fatty meals before the test if possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Detectable EEEV-specific IgG may indicate a past infection or exposure, while rising antibody levels can support a recent infection. Antibodies to some other viruses can cross-react in this test, so unexpected or uncertain results may require repeat testing or confirmation through a public health or specialty laboratory. A negative result does not completely exclude infection if testing occurred very early.
Short name
Eastern equine encephalitis virus IgG antibody titer
Frequently asked questions
Does a positive result mean I currently have eastern equine encephalitis?
Can this test tell me if I have West Nile virus or another related virus?
Is eastern equine encephalitis common?
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