Measles Immunity Blood Test

What is Immunity to Measles?

Measles immunity refers to the presence of protective antibodies against the measles virus in your bloodstream. It develops from either receiving the MMR (measles, mumps, rubella) vaccine or surviving a previous measles infection. The Measles Antibody (IgG) test is the most important test for confirming immunity status.

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What causes immunity to measles?

Immunity to measles is caused by the development of IgG antibodies against the measles virus, which occurs through two main pathways: receiving the MMR (measles, mumps, rubella) vaccine or recovering from a natural measles infection. When you receive the vaccine, your immune system produces antibodies that recognize and fight the measles virus without causing the disease. These antibodies remain in your bloodstream for many years, providing long-lasting protection against future measles exposure.

What is the best test for measles immunity?

The Measles Antibody (IgG) test is the most important test for confirming measles immunity because it specifically measures IgG antibodies that provide long-term protection against the measles virus. This blood test can definitively determine whether you have protective immunity from either vaccination or past infection. Healthcare workers, international travelers, students, and anyone uncertain about their vaccination history should get this test to confirm their immune status and determine if they need vaccination or revaccination to stay protected.

When should I get tested for measles immunity?

You should get tested if you are starting a healthcare job that requires proof of immunity, planning international travel to areas with measles outbreaks, enrolling in college or educational programs with immunization requirements, are uncertain about your childhood vaccination records, or are planning pregnancy and want to ensure protection. Testing is especially important before potential exposure situations, as measles is highly contagious and can spread rapidly in unprotected populations.

What are the symptoms of measles infection?
Measles infection causes high fever (often above 104°F), a characteristic red rash that starts on the face and spreads downward to the body, cough, runny nose, and inflamed eyes (conjunctivitis). Small white spots called Koplik spots may appear inside the mouth before the rash develops. Symptoms typically appear 10-14 days after exposure to the virus, and infected individuals are contagious from four days before to four days after the rash appears.
Who is at risk for measles infection?
People at highest risk include unvaccinated individuals, infants too young to receive the MMR vaccine (under 12 months), pregnant women without immunity, and people with weakened immune systems from conditions like HIV or cancer treatments. International travelers visiting countries with ongoing measles outbreaks face increased risk, as do healthcare workers who may encounter infected patients. Anyone born after 1957 who has not received two doses of MMR vaccine or does not have laboratory confirmation of immunity is considered at risk.
What happens if measles is left untreated?
Untreated measles can lead to serious and potentially life-threatening complications including pneumonia (the most common cause of measles-related death), encephalitis (brain inflammation that can cause permanent brain damage), severe diarrhea and dehydration, and ear infections that may result in permanent hearing loss. Pregnant women who contract measles face risks of miscarriage, premature delivery, and low birth weight babies. In rare cases, a fatal neurological condition called subacute sclerosing panencephalitis (SSPE) can develop years after measles infection, particularly in children infected before age 2.
Can measles immunity be diagnosed with a blood test?
Yes, measles immunity can be reliably diagnosed with a blood test that measures IgG antibodies against the measles virus. The Measles Antibody (IgG) test is the standard method for confirming immune status, and a positive result indicates you have protective immunity from either vaccination or past infection. This blood test is widely accepted by employers, schools, and healthcare facilities as proof of immunity and is more reliable than relying on vaccination records alone, especially if your childhood immunization documentation is incomplete or unavailable.
How is lack of measles immunity treated?
Lack of measles immunity is addressed through vaccination with the MMR (measles, mumps, rubella) vaccine, which is given as a two-dose series. The first dose can be administered to anyone who needs protection, and the second dose follows at least 28 days later for optimal immunity. Most people develop immunity after the first dose, but the second dose ensures maximum protection and covers those who did not respond to the initial vaccination. Post-exposure vaccination within 72 hours of contact with an infected person may prevent or reduce the severity of measles infection in previously unvaccinated individuals.
How can I prevent measles infection?
The most effective prevention is receiving two doses of the MMR vaccine, which provides about 97% protection against measles. Maintaining up-to-date vaccination records and confirming your immunity status through blood testing before high-risk situations (travel, healthcare work) is essential. If you are traveling internationally, check vaccination requirements and measles outbreak status for your destination. Avoiding contact with infected individuals and practicing good hand hygiene can reduce transmission risk, though measles is so contagious that vaccination is the only reliable prevention method.
What can I do at home to support measles immunity?
While vaccination is the only reliable way to establish measles immunity, you can support overall immune function through a balanced diet rich in vitamins A, C, and D, adequate sleep (7-9 hours nightly), regular moderate exercise, stress management, and staying hydrated. Avoiding smoking and excessive alcohol consumption helps maintain immune system health. However, these lifestyle measures cannot replace vaccination or create immunity to measles on their own. If you are unsure of your immunity status, getting tested and vaccinated as needed is the most important step you can take to protect yourself and others from this highly contagious disease.
How’s this work?
Getting your blood test with us is easy, private & backed by the power of science.

Long story short:
  1. In the test options, use the filters or search box to narrow your choices and find the test you want.
  2. If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
  3. Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
  4. If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
  5. When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
  6. Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
  7. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!
  8. If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.
How do I know which test to get?
In the test options, find the test you want. If you’re not sure which test to get, we can lend a hand in finding the right option.

Just text or call us at 754-799-7833, email us at support@privatemdlabs.com, and we'll gladly help you. We've got your back and reply quickly.
Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?
Absolutely! We totally understand that errors can happen. No worries, we're here to help you.

Just reach out to us via text at 754-799-7833 or shoot us an email at support@privatemdlabs.com. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you.

There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out.

Our lab requires an address to be listed to generate an order.
Do you accept health insurance?
Only HSA & FSA is accepted.

Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts.

This policy applies to all insurance companies, including federal health insurance programs like Medicare.

If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com.
Can I cancel my order?
Yes.

We get it – sometimes your needs change.

As long as your samples haven’t been collected yet, we’re happy to help you cancel your order.

If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com.

You can read more about our cancellation policy here.
How can I find a lab location near me?
During the ordering process, you’ll be able to select a specific lab near you, with no strings attached! You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp).

Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym.

If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.
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Measles Antibody (IgG)
What's included
Fast & easy, results by email & SMS
No need to visit a doctor
Private & confidential
No insurance needed
Results explained
No extra fees paid at the lab

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