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Eastern Equine Encephalitis Virus IgG and IgM Antibody Panel

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

Detects antibodies to the Eastern equine encephalitis virus, helping identify a current or previous infection.

Quick summary

["IgM may support a recent infection, while IgG usually indicates earlier exposure or infection."]

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

Key facts at a glance

LOINC
35743-4
Short code
EEEV IgG+IgM Pnl Spec
Synonyms
EEEV IgG+IgM Pnl Spec
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 detects IgG and IgM antibodies against the Eastern equine encephalitis virus, also called EEEV. Antibodies are proteins made by the immune system after exposure to the virus.

Why might I need this test?

This test may be used when someone has fever, headache, fatigue, seizures, or other nervous-system symptoms after possible exposure to mosquitoes in an area where EEEV occurs. It may also be used to investigate unexplained positive results for similar mosquito-borne viruses.

How is the test performed?

A laboratory analyzes a blood sample for EEEV-specific antibodies, commonly using an immunoassay. The laboratory may report IgG, IgM, or both, depending on the test ordered.

How do I prepare for the test?

No special preparation is usually needed. Follow the laboratory's instructions and tell the clinician about recent travel, mosquito exposure, vaccination, and any similar viral illness.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

EEE Virus IgG/IgM Antibodies

Frequently asked questions

What does a positive EEEV IgM result mean?
It may suggest a recent infection, but cross-reactivity with other viruses is possible, so the result may need confirmation.
What does a positive EEEV IgG result mean?
It usually indicates previous exposure or infection. IgG alone does not show when the exposure occurred or whether the person is currently ill.
Is EEEV the same as West Nile virus?
No. They are different mosquito-borne viruses, although laboratory antibody tests can sometimes cross-react. Your clinician interprets the result in the context of where and when exposure occurred.
  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