Spit test vs. nose swab: which catches COVID best?
NCT ID NCT04613310
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tested 949 adults with COVID-19 symptoms to see how well saliva samples work compared to standard nasopharyngeal swabs. Each participant gave four samples: saliva for a rapid test and for PCR, and a nasal swab for both tests. The goal was to find out which combination detects the virus most effectively, with the hope that easier, self-collected saliva tests could speed up testing and reduce discomfort.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Diagnostic test (PCR and rapid antigen test on saliva and nasopharyngeal swabs)
What this could lead to
If successful, this could show that self-collected saliva tests are as reliable as nasal swabs, making COVID-19 testing faster, easier, and less painful.
What could go wrong
This is a completed study comparing test methods, not a treatment. Rapid tests may be less sensitive than PCR, and results may not apply to asymptomatic people or other variants.
Disclaimer
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This is a summary of
the original study
.
Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Unisanté
Lausanne, Canton of Vaud, 1011, Switzerland