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A swab with soda or juice can give a false positive COVID test fox43.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from fox43.com Daily Mail and Mail on Sunday newspapers.
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Social media users claiming that fruit juices and coffee have tested positive for COVID-19 have misunderstood how lateral flow devices (LFDs) work. Videos allegedly showing a positive test result actually reveal what happens when devices are degraded by using substances other than those intended.
Examples of the claim can be found here, herehere.
“Imagine just how many hundreds of thousands of fake positives have been reported as actual covid,” one individual said in a Facebook post (here).
Many of the users have tested LFDs with substances other than saliva to prove they are ineffective. They include examples of the devices showing two pink lines, indicative of a positive COVID-19 result.