Rapid COVID test vs. gold standard: study aimed to see if cheap antigen tests work for contact tracing
NCT ID NCT04745533
First seen May 05, 2026 · Last updated Jun 22, 2026 · Updated 9 times
Summary
This study planned to compare a rapid antigen detection test against the standard PCR test for diagnosing COVID-19 in people who were close contacts of infected patients but had no symptoms. The goal was to see if the quick, inexpensive antigen test could reliably identify contagious individuals during quarantine. However, the study was withdrawn before enrolling any participants, so no data were collected.
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the original study
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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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What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
Antigen detection test (rapid diagnostic test)
What this could lead to
If successful, this could show that cheap, rapid antigen tests are reliable for screening asymptomatic contacts, helping to quickly identify contagious people and slow virus spread.
What could go wrong
The study was withdrawn before any participants were enrolled, so no results are available. Antigen tests are less sensitive than PCR, especially in people without symptoms, so they might miss some infections.
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.