MOSCOW, Jan 5 Failure to follow the precise guidelines for rapid testing for coronavirus infection may result in a false result. The British newspaper Daily Express wrote about this with reference to doctors from the national health service. Doctors advised to thoroughly disinfect hands before taking the test. After taking a smear, you should not keep it in a test tube for a long time. It is better to move the stroke in a circular motion over the bulb, as noted in the text. 
Scientists have estimated the number of asymptomatic carriers of coronavirusSpecialists emphasized that rapid tests have a certain time window when the result is accurate. The result may turn out to be false before or after a certain period established by the manufacturer. «If after the time specified in the instructions a barely noticeable line appears on the test, then this is not considered a positive result,» one of the doctors emphasized. It is safer to take a swab from the nose. and out of the throat, experts added. Provided there is no other indication in the instructions for use. 
Immunologist explained the difference between express tests and PCR testing the rapid tests made more often give a «false negative» result than a «false positive» result, but if all the rules are followed, they have a high accuracy rate. Earlier, immunologist Nikolai Kryuchkov explained that rapid testing can detect pathogen protein fragments in samples taken for analysis. If the result of the express test is positive, it is necessary to undergo PCR testing for coronavirus. The most reliable way to reduce the risk of COVID-19 disease remains vaccination. 
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