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Epstein-Barr Virus (EBV) Nuclear Antigen IgG Antibody, Serum

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

This test measures your body’s immune response to the Epstein-Barr virus (EBV), a common virus that can cause infections like mononucleosis.

Quick summary

["Assesses past or ongoing exposure to EBV, which may indicate immunity or chronic infection."]

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

Key facts at a glance

LOINC
7883-2
Short code
EBV NA IgG Ser Ql
Synonyms
EBV NA IgG Ser Ql
Category
chemistry
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 This Test Measures

The test detects antibodies (specifically IgG) produced by your immune system in response to the nuclear antigen of EBV. IgG antibodies typically develop after initial infection and can persist for years, indicating long-term immunity.

Why It’s Ordered

Doctors may order this test to diagnose or monitor EBV infection, evaluate immune function, or assess risk in conditions like chronic fatigue syndrome, lymphoma, or autoimmune diseases.

Sample Collection and Preparation

A blood sample is taken from a vein in your arm. The serum (liquid part of blood after clotting) is then analyzed to detect EBV-specific IgG antibodies.

What to Expect Before the Test

No special preparation is needed, but inform your healthcare provider if you’re on blood-thinning medications or have bleeding disorders.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

EBV IgG Antibody (Serum)

Frequently asked questions

How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times.
Can I have a repeat test if my results are unclear?
Yes, your doctor may recommend retesting if initial results are borderline or if symptoms persist, especially if other tests are needed for diagnosis.
Does this test differentiate between acute and chronic EBV infection?
No, this test only measures IgG antibodies, which reflect past or long-term exposure. Additional tests (e.g., viral load or acute-phase antibodies) may be needed for acute infection assessment.
  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