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Fluorescent Immunoassay for Antibodies to Varicella-Zoster Virus (IgG)

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

This test measures your body’s immune response to the varicella-zoster virus, which causes chickenpox and shingles. It detects IgG antibodies, which develop after infection or vaccination.

Quick summary

["Helps confirm past exposure or vaccination to varicella-zoster virus."]

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

Key facts at a glance

LOINC
33383-1
Short code
FLUAV Bang Ab Titr CSF
Synonyms
FLUAV Bang Ab Titr CSF
Category
chemistry
Sample
csf
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
1-2 mL
Stability
Immediate analysis required, Refrigerated: 1h
Hemolysis max
200
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have a history of chickenpox, shingles, or if you’re planning to be around someone with chickenpox or shingles. It can also be used to check if vaccination is effective or to assess immune status before certain procedures.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from your arm. The test is quick and typically done in a lab setting.

What the Test Results Mean

Positive results indicate you have developed IgG antibodies, suggesting past infection or vaccination. Negative results mean you likely haven’t been exposed or vaccinated recently. Results don’t show recent infection but can help track immunity over time.

Common Reasons for Testing

This test is often used for: - Confirming exposure to chickenpox or shingles in individuals with symptoms. - Evaluating immunity in healthcare workers or those in high-risk groups. - Assessing vaccination effectiveness in children or adults.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Varicella-Zoster IgG Antibody (FIA)

Frequently asked questions

Why might my doctor want to know my varicella-zoster IgG antibody levels?
Your doctor may check these levels to ensure you’re protected against chickenpox or shingles, especially if you’re at higher risk (e.g., pregnant women, immunocompromised individuals, or those with skin conditions). It helps prevent outbreaks in healthcare settings or protect vulnerable people around you.
What does a positive result mean for my health?
A positive result means your body has developed antibodies against the virus, which means you’re likely immune. However, immunity can weaken over time, so regular checks might be advised if you’re in a high-risk group.
Can I get chickenpox or shingles even if my test is positive?
While a positive test suggests immunity, it doesn’t guarantee you’ll never get the virus. Shingles, which can occur years later, is caused by reactivation of the virus. If you’re concerned, discuss preventive measures like vaccination with your doctor.
  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