Shorter swab, same accuracy? study tests 2 cm vs 4 cm for COVID tests
NCT ID NCT07597889
First seen May 19, 2026 · Last updated May 19, 2026
Summary
This study tested whether a shallow (2 cm) or deeper (4 cm) nasal swab is better at detecting COVID-19 using rapid antigen tests. Over 300 adults in Denmark each got both depths (one in each nostril) and a throat PCR test for comparison. The goal was to find the most accurate and comfortable way to collect samples.
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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.
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Locations
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Rigshospitalet
Copenhagen, Denmark
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