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A video on TikTok showed a teenager dripping soda and other acidic solutions into the entrance of a rapid COVID-19 test, which resulted in a positive result
Although PCR detection is still the gold standard for SARS-CoV-2 detection, the so-called rapid detection of COVID-19 uses lateral flow technology and results can be obtained in 30 minutes or less
In addition to being fast, these quick tests can also be performed anywhere, thereby increasing the availability of testing
Report the results, and then carry out PCR testing, otherwise they will face a fine for education, and British leaders worry that such false positives will be used to play truant
The sudden outbreak of quick test hacker videos has heightened concerns about its accuracy
Alexander Edwards from the School of Pharmacy, University of Reading, UK, who researched and developed clinical and microbiology, gave an explanation
What is a horizontal flow test and how does it work?
The lateral flow test is a quick method to measure a specific target, which is useful for clinical diagnosis in a complex mixture
How accurate are they?
Lateral flow testing can be very accurate and very effective for detecting specific targets in complex mixtures
The biggest advantage of lateral flow tests is that they are portable, they are cheap, they are disposable, and they are easy to use near the patient, but this is a little costly in terms of analytical performance.
There is one final challenge regarding the accuracy of these tests, and that is
Why do things like soda get false positive results?
Its biochemistry is very interesting, because at first glance there seems to be something strange
As far as I can see, there are even some papers that have studied this through experiments.
False positives (whether intentional or not) can be a problem
COVID-19 is a highly contagious disease.
How to reduce the impact of false positives?
The suggestion is really simple
It sounds a bit boring, just follow the instructions
Editor's note: This article has been edited for brevity
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