Researchers in Singapore found that even in asymptomatic individuals Covid-19 in less than 5 minutes prototype that can diagnose precisely and accurately”breath meter” developed.
People who are asymptomatic can transmit Covid-19 to others, making it important to identify and isolate them until they are no longer contagious. Covid-19 detection from breath can be used to quickly screen people attending large gatherings such as conferences and weddings.
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Can detect Covid-19 in 5 minutes from breathalyzer
The gold standard for Covid-19 testing, widely PCR tests It is a technique known as reverse transcription-polymerase chain reaction. However, this technique is typically slow, requires an uncomfortable nasopharyngeal swab to collect samples, and must be performed in the laboratory. rapid antigen test It is much faster, but the rate of false negative and positive results is higher.
A team of researchers from Nanyang Technological University in Singapore said it was “fast, convenient and accurate” that would be suitable for on-site screening of large numbers of people. Breathalyzer type breath test for Covid-19 developed.
When a person breathes into the device for 10 seconds, the compounds in the breath chemically interact with the sensors. The researchers then load the breathalyzer onto the portable Raman spectrometer, which characterizes the SERS sensors based on changes in their molecular vibrations.
The researchers tested the breathalyzer at hospitals and airports in Singapore on 501 people who showed negative (85.2 percent), positive and symptomatic (8.6 percent), or positive and asymptomatic (6.2 percent), based on PCR test results.
The method had a false-negative rate of 3.8 percent and a false-positive rate of 0.1 percent compared to PCR tests, but it was surprising, with results in less than 5 minutes. Researchers hope that the breathalyzer will be used in the coming period. A new tool for Covid-19 Said it could be.
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