Lab test

Varicella VZV Titer Test - Chicken Pox IgG Immunity Testing

A varicella-zoster virus titer test checks for IgG antibodies against VZV, the virus that causes chickenpox and later shingles.

Typical price

From $130

Results

1-3 business days

Preparation

See preparation notes below

Sample

Blood draw or sample collection at a local center

A varicella-zoster virus titer test checks for IgG antibodies against VZV, the virus that causes chickenpox and later shingles. It helps determine whether a person is immune because of previous vaccination or a past chickenpox infection. People often order it when their history is unclear, when immunity documentation is required, or before situations where exposure is a concern. The test uses a blood sample. A healthcare provider interprets the antibody level to judge whether immunity is likely and whether vaccination might be discussed.

• Varicella-zoster virus (VZV) IgG antibody Antibodies that generally indicate immunity to VZV from vaccination or past chickenpox infection.

• People unsure whether they had chickenpox or were vaccinated against it
• Individuals who need documented proof of VZV immunity
• Healthcare or childcare workers with immunity requirements
• People with a possible recent exposure to chickenpox or shingles
• Individuals whose healthcare provider wants to confirm VZV status

• No fasting is required for this blood test
• A standard blood draw is used to collect the sample
• Bring any vaccination or chickenpox history you have
• Tell the lab about medications that affect the immune system

A detectable VZV IgG level generally suggests immunity from vaccination or past infection, while a negative or low level may mean protection is uncertain. If immunity is uncertain, a healthcare provider may discuss whether vaccination is appropriate. The result is interpreted alongside your history, since a past chickenpox infection also produces lasting immunity. Discuss your varicella-zoster IgG result with a healthcare provider before making any decisions.

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