Varicella Zoster Immunity (Chickenpox)
This blood test identifies antibodies against the Varicella Zoster Virus (VZV), responsible for chickenpox (varicella) and shingles (herpes zoster). A positive result indicates prior infection or vaccination, suggesting immunity to new chickenpox infections. This information is particularly important for pregnant women or immunosuppressed individuals exposed to the virus.
Test details
Sample type
Blood
Time of day
No specific time required
Fasting required
No
Results timeframe
Within 7 days
Preparation
No special preparation required
What's measured in this test
Varicella Zoster IgG
Checks immunity to chickenpox virus.
Common reasons for testing
- Assessing immunity status – Determines if an individual has immunity to VZV due to past infection or vaccination.
- Pregnancy planning – Evaluates a woman's immunity to VZV before or during pregnancy to prevent potential complications.
- Evaluating exposure risk – Particularly important for immunosuppressed individuals who have been exposed to the virus