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Varicella immunity

Varicella (chickenpox) titer for healthcare programs

A varicella titer (Varicella-Zoster IgG) documents chickenpox immunity for healthcare programs — self-reported childhood chickenpox is no longer accepted by many Virginia nursing programs. Programs commonly require either documented vaccine doses or a positive titer. Practiclear offers the titer ($59) with a lab draw at Labcorp and a signed documentation letter from Andrew Overbey, FNP-BC (NPI 1104220367) when the reviewed result supports it.

Many nursing programs and healthcare employers no longer accept 'I had chickenpox as a kid' as documentation. Here's what the varicella titer is, why the rule changed, what counts as immune, and what a non-immune result may mean for your program's paperwork.

By Andrew Overbey, FNP-BC, ENP-C Updated April 30, 2026 Virginia residents

Why this requirement exists at all

Varicella (chickenpox) sounds like a forgotten childhood illness, and for most of the country it functionally is — the varicella vaccine was added to the routine US childhood schedule in 1995 and case rates dropped sharply afterward. The clinical reason healthcare programs still require documented immunity is that varicella is exquisitely contagious, can be severe in immunocompromised patients, and is preventable with a documented vaccine response. A nurse or medical student entering a hospital floor is in close contact with vulnerable patients; the program's job is to verify that the student is documented immune before that contact begins.

The CDC's Immunization of Health-Care Personnel guidance is the underlying standard. It calls for one of the following:

  • Two documented doses of varicella vaccine, given at least 28 days apart, OR
  • Laboratory evidence of immunity (positive varicella IgG titer), OR
  • Healthcare-provider-diagnosed history of varicella or herpes zoster, with documentation, OR
  • Laboratory confirmation of past disease.

Self-reported "I had chickenpox as a kid" without any documentation is explicitly not on the list. It used to be — the rule changed because self-reported history turned out to be an unreliable predictor of serologic immunity in studies of healthcare workers.

What the titer measures

The Varicella-Zoster IgG titer is a single blood test. The lab measures immunoglobulin G antibodies against varicella-zoster virus and reports the result as:

Immune (positive)
IgG level above the laboratory reference threshold. This is the result that usually supports an immunity documentation letter.
Equivocal
IgG level in the borderline zone. Your school or employer may require repeat testing, vaccine documentation, or another follow-up pathway.
Non-immune (negative)
IgG level below the laboratory reference threshold. Doesn't necessarily mean unprotected, but doesn't satisfy the documentation requirement on its own. See the next-steps section below.

What it costs and where to draw it

Practiclear's price for the Varicella IgG titer service is $59, which includes eligibility review, Labcorp requisition routing when appropriate, provider review, and signed documentation on Practiclear letterhead when the reviewed result supports it. The current ordering workflow uses a lab draw at Labcorp in Virginia. Confirm hours, appointments, and available services directly with the lab.

Walk-in urgent care for a varicella titer typically runs $200 to $400 in Virginia after the visit fee, and many urgent cares don't routinely run titers (the workflow assumes you're sick). Your primary care office is sometimes a similar price; appointment availability is usually the bottleneck.

How long the whole process may take

  1. Start online. Complete the eligibility check and secure payment for Virginia nurse practitioner review and a signed documentation letter when appropriate.
  2. Intake and clinician review. Practiclear reviews the completed intake during monitored business operations before placing an appropriate lab order.
  3. Blood draw. A Labcorp location in Virginia. About ten minutes.
  4. Result posts. Timing varies by lab processing and collection-site workflow.
  5. Provider review and signed documentation. Practiclear reviews posted results during monitored business operations and sends the PDF when the reviewed result supports it.

Plan for about a week, end to end. If your program deadline is closer than a week, contact us before ordering and we'll be straight with you about whether we can hit it.

What if my varicella titer is non-immune?

A non-immune or equivocal varicella titer means the result did not meet the lab's immune reference threshold. It does not diagnose current chickenpox. Depending on your vaccine history and your program's rules, you may need vaccination, booster documentation, or another follow-up pathway outside Practiclear. Practiclear does not administer vaccines.

Your Practiclear provider tells you, in writing, what your specific result means and what your school or employer may require next. We don't write a documentation letter that treats a non-immune titer as meeting an immunity requirement — that would misrepresent the result.

If you've never been vaccinated and never had chickenpox

A small number of patients arrive at documentation testing having never had documented varicella vaccination and having no history of disease. In that case, your school or employer may require vaccination or additional documentation outside Practiclear. Any pharmacy or your primary care office may be able to help with vaccination. Practiclear does not administer vaccines.

Common varicella documentation gotchas

  • Submitting a parent's recollection. "Mom says I had it as a kid" is no longer accepted documentation by most programs.
  • Confusing varicella with measles. Some patients arrive thinking varicella is one of the M's in MMR — it isn't. Varicella is a separate vaccine and a separate titer. The MMR titer does not include varicella.
  • Expecting a number. Unlike Hep B, varicella IgG is typically reported as Immune / Equivocal / Non-Immune rather than as a continuous number on most lab platforms. Your documentation letter cites the qualitative interpretation.
  • Drawing the titer too soon after vaccination. Testing too soon after a vaccine dose can produce a result your program may not accept. Follow your program's timing instructions or ask before ordering.

Bottom line

The varicella titer is a single blood test that closes the documentation gap between "I had chickenpox as a kid" and the documented serologic immunity that nursing programs and healthcare employers actually require. If your titer is positive, the Practiclear letter documents it and your program reviews it. If your titer is non-immune, your provider explains what the result can support and notes that your program may require vaccination, booster documentation, or outside follow-up. No urgent care visit, no scavenger hunt for childhood pediatrician records.

Varicella titer FAQs

Common questions about the varicella IgG titer

What is a varicella titer?

A varicella titer (varicella-zoster virus IgG, often abbreviated VZV IgG) is a blood test that measures whether your immune system has produced antibodies to the varicella virus — typically in response to the chickenpox vaccine or to past chickenpox infection. The result is reported as Immune, Equivocal, or Non-Immune.

Doesn't 'I had chickenpox as a kid' count?

Not anymore for most healthcare programs. Self-reported history of disease used to be acceptable evidence of immunity, but the CDC's healthcare-personnel guidance and most nursing-program clinical-site partners now require either documented vaccination, a positive titer, or a healthcare-provider-diagnosed history of varicella with documentation. A parent's recollection alone usually doesn't satisfy the requirement.

How much does a varicella titer cost?

Practiclear charges $59 for the Varicella-Zoster IgG titer service. That includes eligibility review, Labcorp requisition routing when appropriate, provider review, and signed documentation on Practiclear letterhead when the reviewed result supports it.

What if my varicella titer comes back non-immune?

A non-immune or equivocal titer means the result did not meet the lab's immune reference threshold. Your school or employer may require vaccination, booster documentation, or another follow-up pathway depending on your records and its rules. Practiclear explains the result in writing but does not administer vaccines.

How long does the result take?

Varicella IgG titer timing depends on lab processing and collection-site workflow. Practiclear reviews results during monitored business operations after they become available, then sends documentation through the secure communication workflow when the reviewed result supports it.

Will my school accept a Practiclear varicella documentation letter?

The letter lists the test name (Varicella-Zoster IgG), the lab, the draw date, the result, the clinical interpretation, and the provider's NPI and Virginia license number — the documentation elements Virginia nursing programs commonly request. Acceptance is at each institution's discretion; if your program has a specific form, Practiclear reviews fit after the secure health form is complete.

Should I order varicella alone or as part of a panel?

If your program asks for varicella plus other titers (MMR, Hep B Surface Antibody) and a TB screen, the bundled Core Screening Panel ($299) is meaningfully cheaper than ordering each individually and only requires one trip to Labcorp.

Is the varicella titer the same as the shingles titer?

They measure antibody to the same virus (varicella-zoster), but the clinical questions are different. The IgG titer used for school documentation reflects past varicella exposure or vaccination — chickenpox, in childhood. Shingles is a reactivation of that same virus later in life and is screened differently. For nursing-school documentation, the standard varicella IgG titer is what programs usually list.