Comparison of SARS-CoV-2 PCR-Based Detection Using Saliva or Nasopharyngeal Swab Specimens in Asymptomatic Populations
Fan et al.
The finding, in our words
Saliva self-collection achieved 97 per cent agreement with nasopharyngeal swabs for SARS-CoV-2 detection in 128 paired specimens using CDC qPCR chemistry. In asymptomatic populations, saliva screening of 466 community participants yielded a 1.07 per cent positivity rate, nearly identical to the 1.12 per cent rate from 8,461 nasopharyngeal swabs in preoperative patients, supporting saliva as a noninvasive alternative for decentralised diagnostic programmes.
A paraphrase to the Library’s standard, never the abstract. The source is one link away and is always the authority.
The study found that self-collected dried saliva on FishburneTabs achieved 92% accuracy for viral RNA detection compared to standard liquid saliva samples. This method supports decentralised testing by enabling reliable sample storage and transport for upper respiratory infections.
Mora et al., ACS measurement science au · source ↗
The COVID-19 pandemic accelerated adoption of decentralised testing and self-collected saliva specimens, but revealed challenges with variable diagnostic accuracy and lack of internationally standardised processing protocols. Stricter regulatory oversight and robust diagnostic stewardship are needed to balance broad access with clinical performance.
This review summarises how incorporating saliva and urine into home-based point-of-care systems expands diagnostic accessibility for dengue virus, aligning with the WHO REASSURED framework for affordable and rapid testing.
Shi et al., Journal of medical virology (paywalled) · source ↗
Oral sponge saliva RT-PCR achieved 95% sensitivity and 95% specificity compared with nasopharyngeal swabs in 3,488 symptomatic and asymptomatic adults, while buccal swab performance varied with infection history and symptoms. The rapid antigen test showed 66.9% sensitivity overall, increasing to 97% in high viral load samples. Oral sponge collection permits self-sampling without laboratory pre-analytical steps, offering a robust method for decentralised SARS-CoV-2 screening.
Althaus et al., BMC infectious diseases · source ↗
Saliva-based RT-PCR for SARS-CoV-2 achieved 100 per cent sensitivity and 97 per cent specificity against nasopharyngeal swabs, while rapid antigen testing on saliva showed comparable performance and detected 97 per cent of infectious cases with cycle threshold values of 30 or below. This supports saliva self-collection as an accurate, practical option for decentralised COVID-19 screening.
Sultana et al., Diagnostic microbiology and infectious disease (paywalled) · source ↗