The tests are more time consuming and expensive than just getting a new MMR vaccine. If you were vaccinated, then there will be no effect because your immune s

The tests are more time consuming and expensive than just getting a new MMR vaccine. If you were vaccinated, then there will be no effect because your immune system will kill the live virus in the vaccine. If you weren't, then you are going to need the vaccine when your tests come back anyway. Plus in some places (like California) you can get a free MMR vaccine at pharmacies like CVS, without making a doctor appointment.