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Updated August 5, 2019

FAQ about the Measles Titer Clinic and Sharing Immunity Records

Measles activity is on the rise in New Jersey and New York City. At this time, we are not aware of any measles cases on our campus or in the immediate area around it.

Can you prove that you are protected? Consider which of the following statements best describes you:

I was born before January 1, 1957.

You are considered to have immunity. No additional action needed.

I know that I am protected and I have proof.

According to the US Centers for Disease Control, to prove your immunity, you must have:

  • Vaccination records showing two doses of MMR (measles-mumps-rubella) or measles vaccine,
  • Medical report stating that you were previously infected with measles, or
  • Lab evidence (documentation of measles titre testing indicating acceptable level of immunity)

If you have any documentation of this kind, please bring your records to University Health Services so that they may be added to your confidential records. Bring your records to the front desk at McCosh Health Center, fax them to 609-258-0976, or send via secure e-mail following the instructions below.

I think that I am protected, but I do not have proof and/or am not sure.

If you have no vaccination records or are unsure of your level of protection, a blood test called a titre will confirm your level of immunity. You can get a measles titre:

  • Through your primary healthcare provider. Contact your insurance carrier for coverage information.
  • At the Princeton University Measles Titre Clinic on August 6, 8, 21, 22, and September 17 and 19. If you have health insurance through the University, titres provided at the clinic will be covered by your plan, consistent with your plan benefits.   Make an appointment online using

I am not protected.

For protection, you need two doses of the measles or MMR vaccine. This vaccine is available through:

  • Your primary healthcare provider and walk-in clinics. Contact your insurance carrier for coverage information. Depending on demand, Princeton University Health Services may schedule a measles vaccine clinic in the fall.

Sharing Proof of Immunity

If there is a case of measles on campus, you may be required to prove that you have immunity before you are permitted to return to campus. Sharing these records with Employee Health proactively, in advance of such a case appearing on campus, could help you avoid any inconvenience.

Three ways to share:

Measles Titre Testing Instructions

Measles Titre testing is always available (with a prescription from your provider) at the Quest lab located in McCosh Health Center. For your convenience, Quest Labs at University Health Services will provide dedicated measles titre testing on August 6, 8, 21, 22 and September 17 and 19. To participate in this clinic,

  1. Make a 10 minute appointment using
  2. Bring your Princeton University ID card and your insurance card to the front desk at McCosh Health Center five minutes before your appointment.
  3. The receptionist will provide you with paperwork to bring to the Quest lab.
  4. Quest Labs will bill your insurance company. The Aetna and UnitedHealthcare policies available through Princeton University cover titres, consistent with your plan benefits.
  5. Employee Health will provide you with test results within two weeks, along with advice about the need for MMR vaccine.
  6. Employee Health will maintain test results in your secure electronic health record.  You may also wish to supply a copy of your results to your primary care provider.

Getting a Measles/MMR Vaccine

Most primary care providers, walk-in clinics, and primary and urgent care clinics provide the measles vaccine, normally in the form of the MMR. Check with your insurance carrier regarding your plan benefits.  A measles vaccine clinic for University faculty and staff may be planned for the fall, depending upon level of interest. 

About Measles

Measles is a highly contagious virus spread through coughing and sneezing. Symptoms include fever, runny nose, cough, red eyes and sore throat, followed by a rash. Protection from Measles is given by the measles, mumps, and rubella (MMR) vaccine.

Measles is a common disease in many parts of the world. Teenagers and adults who do not have evidence of immunity should get two doses of MMR vaccine separated by at least 28 days before any international travel.

Recent cases across the United States show that measles is still a concern, and people are encouraged to check their protection status against the disease.

For More Information


Frequently Asked Questions

Regional Measles Alerts


A threat of measles outbreak on the Princeton University campus was successfully contained in February 2015.

For more results, please use the Princeton University search page.