Do both nostrils need to be tested for nucleic acid?

Nucleic acid detection is a popular detection method, which can judge whether it is infected with virus in a short time and play a very good role in epidemic prevention and control. Many people will do nucleic acid testing. Nucleic acid testing can be taken from the throat or nostrils. If samples are taken from nostrils, two nostrils are usually made.

Do you have to do two nostrils for nucleic acid testing? You usually have to do both nostrils.

Nucleic acid detection is a novel coronavirus. The doctor will take out nasopharyngeal secretions through the nasal cavity with a sterile cotton swab. This method has high accuracy, but most hospitals usually check throat swab secretions. Nucleic acid testing is carried out by a professional testing doctor collecting samples. They don't infect the nose.

Detection of a novel coronavirus nucleic acid with a nasal swab. The specific method is to insert the nasal swab into the nostril along the direction perpendicular to the nose until the hand touches the wall, so that the nasal swab stays in the nose for 15-30 seconds, then gently rotate it for three times, take out the nasal swab and submit it for inspection as soon as possible.

Why insert two nostrils in nucleic acid detection to improve the accuracy of nucleic acid detection and make the accuracy of nucleic acid detection results higher?

The nucleic acid test nose is a nasal swab test. Compared with throat swab, the patient is more painful in the process of indwelling. In the process of collection, the collector should keep his head still, and the specimen collector should clean the inner wall of the nasal cavity, that is, clean the secretions on the inner wall of the nasal cavity. The sampler will hold the subject's head with one hand and slowly insert the nasal swab into the nasal cavity with the other hand. Be sure to go to the nasopharyngeal swab and stay for a few seconds, then suck out the secretion, gently rotate it, and finally take out the swab for inspection. Relatively speaking, it may be more painful than a throat swab.

Matters needing attention in nucleic acid detection In order to avoid "false negative" in nucleic acid detection and reduce the possibility of cross-infection in hospitals, we need to do the following:

1. To avoid vomiting, do not eat for 2 hours before sampling;

2. In order to avoid affecting the test results, smoking, drinking or chewing gum shall not be allowed within 30 minutes before sampling;

3. In order to reduce the risk of cross-infection in the hospital, all people who go to the hospital for testing should wear masks and prepare spare masks;

4. All people waiting for the test must keep the distance above 1 meter and avoid talking.