A patient seated in the chair before a blood draw
In person

Measles Immunity (IgG)

Your measles (rubeola) IgG antibody result, from one blood draw.

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  • 2,000+ lab locations. Find one near you
  • Nothing due at the lab. FSA / HSA accepted
  • Ordered by a licensed clinician

At a glance

Collection
Blood draw
A standard blood draw at the lab.
Preparation
None
Nothing to do ahead of time. Water is fine.
Results
2 to 4 days
Typical turnaround after your visit.
Where
2,000+ lab locations
Nationwide, with nothing due at the lab.

About this test

This test measures IgG antibodies to measles (rubeola), which can come from vaccination or a past infection. The lab notes measles IgG is consistent with immunity or a prior exposure. It is often checked for school, work, or travel, or when records are lost. It does not check for a current infection.

For adults 18 and older. Test availability varies by lab location.

Who should take this test?

For adults who are unsure of their measles vaccine history, are planning travel, or were asked about immunity by a school or job. A healthcare provider can advise on vaccination if needed.

Ask about this test

Not sure this is the right test?

AI-generated. For information only, not medical advice. Call 911 for an emergency.

What does this test measure?

Your result shows whether measles IgG antibodies were found, which can help you and a healthcare provider talk about your immunity and what a school or work program asks for.

Measles (rubeola) IgG
Measles IgG is an antibody made after measles vaccination or infection. A positive result is consistent with immunity or past exposure. A negative or equivocal result is something to discuss with a healthcare provider, who can advise on vaccination.
Why it’s measured: Shows antibodies that are consistent with immunity to measles from vaccine or infection.

How it works

  1. Step 1

    Order online

    Check out here. A licensed clinician in your state reviews your order and sends it to the lab.

  2. Step 2

    Visit a lab

    Bring a photo ID to any of 2,000+ lab locations. No fasting needed, and nothing is due at the lab.

  3. Step 3

    Get your results

    Results post to your account, usually in 2 to 4 days, each number next to the lab’s reference range.

Find a lab near you

Choose from 2,000+ lab locations nationwide. Your order works at any of them.

What your results tell you

The lab compares your measles IgG result with its cutoff and reports an interpretation, such as positive, equivocal, or negative.

  • Your number next to the lab’s reference range
  • Explained in plain language
  • A licensed clinician reviews your order and, if appropriate, orders the test.
  • A lab report you can download and share

A negative or equivocal result is worth discussing with a healthcare provider, who can explain it and advise on vaccination.

Clinical-grade testing, from the comfort of home.

From the lab to your report, every step of our process meets the gold standard in medical testing.

  • CLIA-certified labs

    Every lab we partner with is certified under the Clinical Laboratory Improvement Amendments, meeting both state and federal standards with regular independent inspections.

  • We protect your health data

    We protect your health data with encryption and do not sell it. Some results must be reported to public health authorities by law. See our Privacy Notice.

  • Rigorous quality assurance

    All partner labs run regular internal quality checks, participate in proficiency testing, and comply with federal and state lab regulations.

  • Clinician-reviewed reports

    Results are reviewed by an independent, licensed clinician.

Questions

Common questions.

Anything else, our care team answers by phone, text, or email.

A positive result means measles IgG antibodies were found above the lab’s cutoff. The lab notes this is consistent with immunity or a prior exposure, which can come from vaccination or a past infection. Check that the result meets your school, employer, or travel program’s requirements.

A negative result means the lab did not find measles IgG antibodies above its cutoff, and an equivocal result is borderline. Either one is worth discussing with a healthcare provider, who can explain what it means for you and advise on vaccination.

No. This test measures IgG, the antibody type linked to immunity or a past exposure. The lab notes that a different antibody type, IgM, is linked to a current or recent infection, and that is not part of this test.

If you have a fever with a rash, or have been around someone with measles, contact a healthcare provider or your local health department right away.

Lab tests are informational and don’t diagnose conditions on their own. Available to adults 18 and older; test availability varies by lab location. A licensed clinician reviews your order and, if appropriate, orders the test. All testing is performed at CLIA-certified laboratories. Not for emergencies: if you think you may be having a medical emergency, call 911.