How long does it take for COVID-19's self-test box to produce results?
Jin Dongyan, a professor and virologist at the School of Biomedical Sciences of the University of Hong Kong, told the beijing business today reporter today that the principle of antigen detection is to detect the antigen protein in the virus, which is similar to the principle of pregnancy test. "Detection of this antigen means infection. Nucleic acid detection is to release the nucleic acid in the virus, and after an amplification process, the nucleic acid is qualitative and quantitative. "
According to the application scheme of antigen testing in COVID-19, people who are suitable for antigen testing include those who go to primary medical and health institutions, have symptoms such as respiratory tract and fever for less than 5 days, isolated observers and community residents who need antigen self-examination.
Community residents who need self-test can purchase antigen detection reagents for self-test through retail pharmacies, online sales platforms and other channels.
Jin Dongyan said that antigen detection is an important supplement to nucleic acid detection. Antigen detection does not need special technology, and the results can be obtained quickly within 15-20 minutes.
Because of its convenience, antigen detection can be done for three days continuously, and the sensitivity and specificity of the combined detection results will not be lower than that of only one nucleic acid detection for three days.
Patients found by antigen testing have a stronger correlation with infectivity, and some infected people can be found quickly. If they are found early, they can be managed as soon as possible.
COVID-19 self-test box online which platforms are sold?
1，JD。 COM: The appointment has been opened, and Huada Gene can be purchased directly.
The first batch of COVID-19 antigen self-test products have been booked online on JD.COM APP. Consumers can make an appointment on the details page by searching for "COVID-19 antigen self-test" through JD.COM APP, and they can place an order for purchase when the goods are officially released. At present, only Huada Gene can be purchased directly at the price of 490 yuan /20 people, and the prices of other reserved products are yet to be released.
2. Meituan: make an appointment to buy, and the delivery cycle is about 15 days.
On March 13, COVID-19 antigen self-test products officially opened an appointment for drug purchase in Meituan. Log in to Meituan APP or Meituan Takeaway APP, enter the "Meituan Buy Medicine" channel, and click on the "COVID-19 Self-Test" area to find related products. It is worth noting that from March 13 to April 1 1 day, the product is limited to 1 piece per user per day. According to the page, the delivery cycle is about 15 days.
3, Tmall: direct purchase, the price of 20 people is 486 yuan.
On March 14, Tmall Health launched the COVID-19 antigen self-test product. Search for "COVID-19 self-test" in Taobao APP to enter the purchase page of COVID-19 antigen test kit. At present, only Novozymes COVID-19 antigen test kit can be purchased directly. The price of this product is 486 yuan, and the specification is 20 people. There is also a detailed introduction to the self-test purchase instructions and use process of COVID-19 antigen on the page. Through nose swab sampling, the test results can be read within 10-20 minutes.
4, Suning.cn: make an appointment to buy, the fastest 10 minutes.
On the morning of March 14 10, Suning.cn officially opened an appointment for COVID-19 antigen self-test products. It is reported that individuals can complete the test in only 8 steps at home, and the results can be obtained in 10 minutes at the earliest. The shelf life of the reagent at room temperature is 15 months. Consumers can log on to Suning.cn App and search for "COVID-19 self-test box" to make a quick appointment.
Is COVID-19 one or two positive?
The judgment of the test results is roughly the same as that of other test reagents, and the two bars are positive.
However, it should be noted that the results of this reagent can not replace the nucleic acid detection report, but can only be used as early rapid detection.
For isolated observers, nucleic acid detection should be carried out according to the requirements of the current prevention and control plan during the isolation observation period, and antigen self-test should be carried out once a day for the first 5 days.
For community residents, those who need self-test can buy and conduct self-test. Residents with negative antigen test and no symptoms can be closely observed, and antigen test or nucleic acid test can be carried out when necessary; Residents with symptoms are advised to go to medical institutions with fever clinics for nucleic acid testing as soon as possible; If it is inconvenient to see a doctor, you should be isolated at home, avoid going out for activities, and conduct antigen self-test once a day for 5 consecutive days.