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There are many disposable virus sampling tubes on the market, but the quality is also uneven. Common quality problems include: sample preservation solution leakage, tube cover damage, sample preservation solution discoloration, label detachment, etc. The virus sampling tube is a container for sample storage, and its quality problem directly affects the results of nucleic acid detection. So, what should we … |
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In nucleic acid testing, what are the main types of specimens collected, and what are the advantages and disadvantages of each? A variety of specimens can be collected for laboratory testing at the time of diagnosis of COVID-19 cases. Upper respiratory tract samples can be collected: including nasopharyngeal swabs, oropharyngeal swabs, etc.; lower respiratory tract samples can also be collected: … |
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Although the functions of ordinary cotton swabs and flocked swabs have many similarities and look similar, their uses are different. Let’s analyze why flocked swabs are used for nucleic acid sampling and antigen detection through simple experiments. instead of regular cotton swabs? First prepare two glasses of water Add blue ink dye to a cup Have flocked swabs and ordinary … |
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As China is battling a new COVID-19 outbreak, the increased proportion of asymptomatic patients in the newly confirmed COVID-19 cases has raised questions among the public. Let’s revisit some important information about COVID-19 asymptomatic patients. Q: What is asymptomatic infection? A: Asymptomatic infection means people who display no abnormal findings on their lung CT scans and have no symptoms such as … |
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A variety of specimens can be collected for laboratory testing at the time of diagnosis of COVID-19 cases. Upper respiratory tract samples can be collected: including nasopharyngeal swabs, throat swabs, etc.; lower respiratory tract samples can also be collected: deep cough sputum, bronchoalveolar lavage fluid, bronchial lavage fluid, respiratory tract aspirates, etc.; stool samples can also be collected / Anal … |
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When a new round of nucleic acid screening was being carried out in Shanghai, a rumor spread widely on social media to the effect that “the cotton swabs used for sampling have reagents on them and are poisonous”. Some netizens left a message on the “Shanghai Refutes Rumors Platform” saying that the elderly at home did not want to participate … |
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A medical worker takes a swab sample from a child for nucleic acid test at a testing site in Futian district of Shenzhen, South China’s Guangdong province, Jan 9, 2022. [Photo/Xinhua] SHENZHEN — Government offices, enterprises, and businesses in the southern Chinese metropolis of Shenzhen to resume normal work and production from Monday as the latest COVID-19 resurgence subsides, local … |
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CHANGCHUN — The northeastern Chinese cities of Changchun and Jilin, hardest hit by the fresh outbreak of COVID-19, have distributed millions of COVID-19 self-test antigen kits to citizens, including students, to accelerate massive epidemiological screening. Starting from 4 am Wednesday, Changchun, the capital of Jilin province, has given out more than 3.34 million self-test kits to part of its urban … |
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What is a COVID-19 false negative? It means that the result of a certain test should actually be positive, but the result is negative due to reasons such as operation, equipment, personal physical characteristics, etc. Positive results were obtained after repeated negative tests, throat swab samples were negative for multiple tests but finally positive results were detected in respiratory lavage … |
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COVID-19 is a respiratory disease that can cause severe illness, especially in people with preexisting health conditions like diabetes, obesity, or high blood pressure. Types of COVID-19 tests Two types of tests are commonly used to identify a current infection of SARS-CoV-2, the coronavirus that causes COVID-19. The first type is molecular test. Molecular tests include nucleic acid amplification tests (NAAT) such as … |
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Photo of Fudan University’s Handan campus in Shanghai, Nov 14, 2018. [Photo/IC] Researchers from Fudan University in Shanghai have devised a method that offers detection of novel coronavirus nucleic acids in less than four minutes, much faster than the current method used domestically. The research team said the new approach is ultrasensitive and uses small, portable equipment. In the polymerase … |
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COVID-19 is a variant of the coronavirus that can cause pneumonia in humans. It is an acute respiratory infectious disease, highly contagious, and most people are susceptible. It is easily replicated in the upper respiratory tract of humans. Under normal circumstances, the new crown nucleic acid can be quickly detected within 96 hours after infection. Testers can find the virus … |
