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Choose collection locationImmunology / Serology · Individual laboratory test
Varicella-zoster IgG looks for evidence of a previous immune response to chickenpox or its vaccine. It is different from testing an active rash.
Clinical authorDr Nirupama SabhapathySpecialist Clinical Pathology
Understanding the test
Also called Chickenpox Immunity (IgG)
This IgG test can help assess prior varicella exposure or response when immunity is relevant to a clinical decision. Documented vaccine doses are useful context.
VZV IgG can help document previous infection or vaccination when history is unclear.
The clinician considers timing and documented vaccination when advising someone who has been exposed.
Before your sample
No fast is necessary. Bring varicella vaccine records, any history of chickenpox and earlier immunity results, particularly when testing before treatment or after an exposure.
A clinician takes a small sample of blood from a vein. The laboratory uses serum, the liquid separated from the blood after it clots.
Smart Report
24 hoursLaboratory turnaround
A reactive result generally indicates a previous immune response. It cannot establish whether a current rash is chickenpox or shingles.
From sample to follow-up

Choose your location, add the test to your care bag and select a time. If you are booking for someone else, assign the test to them in checkout.
Choose collection locationLook for Varicella Zoster Virus (VZV) Antibody, IgG Qualitative in your report. Use the sample type and collection time when comparing it with an earlier report.
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Compare the result with documented vaccine doses, previous chickenpox and the particular reason immunity is being assessed.
Patient questions
Some commercial antibody tests may miss a vaccine-induced response. Your clinician can interpret the report alongside documented vaccine doses and the reason for testing.
Chickenpox during pregnancy is dangerous, so knowing your immunity in advance matters. If you are not immune, the vaccine can be given before pregnancy, as it is live and is not given during pregnancy. If you are already pregnant and not immune, your doctor knows to act quickly should you be exposed to chickenpox.
Chickenpox can be more serious when immunity is weakened. Some treatments rule out the live chickenpox vaccine. Before treatment, your clinician can review your illness history, vaccination record and IgG result to decide whether vaccination or a plan for future exposure is appropriate.
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Written by Dr Nirupama Sabhapathy, Specialist Clinical Pathology. Medically reviewed by Dr Joyce Jose, Specialist Clinical Pathology, on .
Catalogue information and AED price checked on 2 November 2026. Clinical suitability, preparation, collection arrangements and turnaround are confirmed for your selected test.