A pharyngeal swab is a small amount of secretion dipped in a sterile medical swab from the pharynx of the subject and then tested for respiratory viruses, bacteria and other pathogenic microorganisms, and the pharyngeal swab is collected from the pharynx and tonsils of the subject.

What do I need to pay attention to for pharyngeal swab sampling?

①, drinking water before oropharyngeal swab sampling will dilute the virus attached to the throat, especially drinking hot water will also inhibit the virus activity, in order to improve the accuracy of pharyngeal swab nucleic acid detection, 15~30 minutes before the test take care not to drink water to ensure that the pharyngeal swab test has a high accuracy.

(ii) Patients with good pharyngeal exposure are not advised to make too long "ah~" sounds to reduce the risk of occupational exposure to the sampler.

(iii) To prevent vomiting, avoid eating two hours before collecting pharyngeal swab specimens.

(iv) Do not smoke, drink alcohol, or chew gum half an hour before sample collection.

⑤. It is best not to use antibacterial drug therapy before sampling pharyngeal swabs.

Sampling steps for pharyngeal swabs.

①, ask the patient to sit down, tilt the head back and open the mouth wide

②, remove the disposable sampling swab and fix the patient's tongue with the tongue depressor;

③, use the sampling swab to cross the tongue root to the posterior pharyngeal wall and the lateral wall of the tonsillar crypt;

④、Repeatedly wipe 3~5 times to collect mucosal cells;

⑤、Gently remove the swab to avoid touching the tongue, uvula, oral mucosa and saliva;

⑥、Put the swab into the virus sampling tube, break and discard the end of the swab at the swab break, and tighten the tube cap;

⑦, put the sample into a biosafety bag and send it for timely examination.