"Big White" gives you little knowledge of nucleic acid detection
Release time:
2022-05-20
Nowadays, nucleic acid testing has been normalized, and the flow between places requires proof of nucleic acid testing. Nucleic acid testing is to directly find evidence of the existence of the virus, because if a person is infected with the virus, there will be virus debris in the respiratory tract of the pharynx. If the virus debris is separated from the sample collected by smearing or sputum, that is to say, the test result is positive, it proves that the person has been infected with the virus. Therefore, nucleic acid testing is of great importance as a standard for the diagnosis of COVID-19. So what are the precautions for nucleic acid testing? Does it hurt to do nucleic acid testing? What is the process? All the answers you want to know are here.
What are the 1. nucleic acid detection methods?
Nucleic acid detection is mainly divided into nasopharyngeal swab detection and oropharyngeal swab detection, generally take the throat swab detection method. As the name implies, nasal sampling for nasopharyngeal swab detection, oral sampling called oropharyngeal swab detection. There is no essential difference between the two detection methods. Most hospitals and institutions use oropharyngeal swab detection, because this detection method is the least painful and more convenient to collect samples.
2. what is a throat swab? Does it hurt to take a throat swab?
Throat swab refers to the method of collecting samples in the throat through a cotton swab. It will not hurt. Some people will feel slight nausea or mild throat discomfort, which will soon ease or disappear after collection.
3. nucleic acid testing can cause harm to the human body?
The test will not cause any harm to the human body, only in the collection of throat swabs, cotton swabs into the throat will feel a slight foreign body sensation.
What should be paid attention to before and after 4. nucleic acid detection?
The following points are likely to be overlooked: ① Before collecting nasopharyngeal swabs, the tested person should inform the collecting personnel whether they have relevant past medical history or related matters, such as nasal surgery history, nasal septum curvature, blood diseases, throat diseases, or taking anticoagulants and other related risk factors. ②When collecting oropharyngeal swabs, the tested person's head is tilted back, try to relax, take a deep breath, and open his mouth to make an "ah" sound, which is helpful to expose the throat, but during this process, irritating dry cough, nausea, vomiting and other symptoms may occur. Nasopharyngeal swab collection process may appear nasal sour itch, stimulate sneezing, can be immediately covered with tissue or elbow.
What are the processes for 5. nucleic acid testing?
Nucleic acid testing is currently the most effective method to determine whether infected with the virus as soon as possible. Nucleic acid testing includes: sample inactivation-> specimen processing-> nucleic acid extraction-> sample addition-> computer testing-> result reporting. Each step has to be carefully operated, the workload is extremely large, and the operator directly faces the new coronavirus, the risk is very high, the requirements of the laboratory conditions are also very strict.
How many times do 6. nucleic acid tests need to be done?
Nucleic acid testing is done twice or more to ensure higher accuracy. After the first result comes out, you can do the second test. After the nucleic acid test is completed, the testing agency will enter the personal test results into the relevant information system. Residents can enter their own information and query the nucleic acid test results through Health Bao.
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