Anti-Epstein-Barr Virus (EBV) IgA Antibody, Titration
This test measures the amount of IgA antibodies your body produces in response to Epstein-Barr virus (EBV), a common virus that can cause infections like mononucleosis. IgA antibodies are part of your immune system’s defense and can help identify past or current EBV exposure.
["Assessing your immune response to EBV infection, often used to diagnose or monitor conditions like chronic fatigue syndrome or other EBV-related illnesses."]
Key facts at a glance
- LOINC
- 22303-2
- Short code
- EIV A2 Ab Titr Ser
- Synonyms
- EIV A2 Ab Titr Ser
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- 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 Does This Test Measure?
The test detects IgA antibodies specific to EBV, which are produced by your immune system in response to the virus. IgA antibodies are typically found in saliva, mucus, and other bodily fluids, playing a role in local immunity. This test helps determine if you’ve been exposed to EBV and whether your immune system is actively responding.
Why Might You Need This Test?
Doctors may order this test if you have symptoms like fatigue, sore throat, or other signs of EBV infection, or if you have conditions like chronic fatigue syndrome, where EBV is suspected as a contributing factor. It can also be used to monitor immune responses in certain autoimmune or chronic illnesses.
How Is the Test Performed?
A blood sample is drawn from a vein in your arm. The blood is then processed to separate the serum, where the IgA antibodies are measured using a specialized immunoassay technique. This process helps quantify the antibody levels for analysis.
What Are Possible Results?
Results can vary widely depending on your exposure to EBV and immune response. A positive result indicates the presence of EBV-specific IgA antibodies, suggesting past or current infection. However, interpretation should always be done by your healthcare provider based on your clinical symptoms and medical history.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
EBV IgA Antibody (Titration)
Frequently asked questions
What does a positive result mean?
Can this test be used to diagnose acute EBV infection?
How long does it take to get results from this test?
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