What is the reliability of Vault Health/Rutgers COVID-19 saliva test compared with the more common nasal pharyngeal (NP) swab?

Saliva sampling offered by Vault Health/Rutgers is considered an accurate way of taking a patient sample for COVID-19. A recent study by Yale University researchers, which has yet to be peer-reviewed, showed 98% concordance to matched NP swabs and to be highly sensitive and specific. In addition, the Rutgers test is the only authorized solution of its kind for tests conducted in the United States and is currently used by many national companies, as well as sports leagues such as the National Hockey League, the PGA Tour and Major League Soccer.