The new method is set to start within the next few days at eight community testing sites around the city. The process will work like this: A health care worker will explain how to administer the test, and then the person would take a nasal swab, with a health professional watching via a mirror to offer guidance, Katz said. The person getting tested then will spit into a cup for a second sample for cross-checking. The samples will then be given to a health care worker and tested.