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Why saliva based testing
> Pain and discomfort free
> No contact sampling for enhanced safety
> Self sampling, reducing/eliminating testing queues
> Rapid processing for client convenience
> As accurate as nasal/oral swabs

> Enables large scale testing due to self collection
> Enables testing of young children without discomfort
> Implementation in UK, New Zealand, India & Australia (news links below)

> Widely implemented in USA since mid 2020 (news links below)

Several peer reviewed scientific studies have compared nasopharyngeal swabs and saliva samples in confirmed COVID-19 patients and healthcare workers.
The studies found that:
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Using saliva for COVID-19 detection is more sensitive and consistent than using nasopharyngeal swabs.
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Less variability occurred in sample collection of saliva.
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COVID-19 was detected in the saliva of asymptomatic healthcare workers, whereas COVID-19 was not detected from nasopharyngeal swabs in the same workers.
The literature detailed below shows that saliva is a reliable sample and more sensitive than nasopharyngeal swabs.
1. To, K. K-W. et al. Consistent Detection of 2019 Novel Coronavirus in Saliva. Clin Infect DIs. (2020) doi: 10.1093/cid/ciaa149.
2. Kojima, N. et al. Self-Collected Oral Fluid and Nasal Swabs Demonstrate Comparable Sensitivity to Clinician Collected Nasopharyngeal Swabs for COVID-19 Detection. medRxiv 2020.04.11.20062372 (2020).
3. U.S. Food & Drug Administration. Accelerated Emergency Use Authorization (EUA) Summary SARS-CoV-2 Assay (Rutgers Clinical Genomics Laboratory)
4. CDC. Coronavirus Disease 2019 (COVID-19). Centers for Disease Control and Prevention https://www.cdc.gov/coronavirus/2019-ncov/lab/rt-pcr-panel-primer-probes.html (2020).
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