Salivary biomarkers potentially used for COVID-19 diagnosis

  This literature review concluded that saliva leads to a reliable detection of SARS-CoV-2, with diagnostic performance comparable to throat and nasopharyngeal swabs.  However, more studies need to be performed in order to confirm these diagnostic abilities.  

Bowdoin College

Studies suggest the presence of antibodies against COVID-19 in both blood and saliva, indicating that Saliva can be an alternative fluid to test for COVID-19. The IgG class of antibodies is found to be present in both the saliva and blood atleast three months after onset of infection. This research could lead to development of new and simpler diagnostic testing.    

Saliva could be an alternative fluid to test COVID-19 antibodies 

-  Fernandes LL, Pacheco VB, Borges L, et al. Saliva in the Diagnosis of COVID-19: A Review and New Research Directions. Journal of Dental Research. 2020;99(13):1435-1443.

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