Arizona lab tests if your COVID-19 vaccine has created an immune response Arizona lab tests if your COVID-19 vaccine has created an immune response Any Lab Test Now in the Valley that is specifically testing to see if your COVID-19 vaccine is doing what it should. PHOENIX - 4.3 million doses of the COVID-19 vaccine have been administered in Arizona as of Friday, April 16. 1.8 million Arizonans have been fully vaccinated. Some of those vaccinated may wonder if there's a way to test if your vaccination protecting you. Well, they're in luck. There's a company in the Valley that's specifically testing to see if your vaccine is doing what it should.