According to experts, our respiratory tract is divided into upper respiratory tract and lower respiratory tract, and the upper respiratory tract includes the nose, throat and throat. The lower respiratory tract includes the bronchi, trachea and lungs. We know that nucleic acid testing is used as a basis for pathogenic diagnosis, and generally nucleic acid testing specimens are collected from deep sputum to do specimen testing.

Pharyngeal swabs are divided into nasopharyngeal swabs and oropharyngeal swabs, generally collected from the mouth is called oropharyngeal swabs and from the nose is called nasopharyngeal swabs. Currently, most hospitals use oropharyngeal swabs because they are easy to collect and less painful for the patient.

①, it is recommended that you bring some water. Because of the dry weather, it is inevitable that you will be thirsty during the queuing process, so you need to try to keep your throat moist before the examination, and you can drink a small amount of water, but you should not drink 30 minutes before the collection.

②, because to collect samples of the throat may cause throat discomfort, so it is not recommended to take throat swabs after a full meal or after drinking alcohol, and be sure to pay attention to 30 minutes before sampling should not drink, smoke, chew gum or betel nut, etc.

③, before sampling to avoid eating irritating, strong-tasting food, should be a light diet.

④, 30 minutes before specimen collection, you should not use mouthwash with disinfectant drugs or apply anti-inflammatory drugs on the throat (oral cavity) area.

⑤. You should take the initiative to cooperate with the doctor to check personal information and inform your condition to facilitate cooperation.

⑥. To improve the accuracy of the results, it is recommended to wear a mask to cover the nose and mouth before sampling and coughing, and then tilt your head slightly to cooperate with the doctor to say "Ah~" in a long voice.

Finally, the epidemic situation is still serious, so we hope that everyone can go out and wear a good mask to prevent and control the new crown epidemic on a regular basis.