1. Before sampling, mark the relevant sample information on the label of the sampling tube.

2. Use a sampling swab to sampling at the nasopharynx up to different sampling requirements.

3. Sampling methods are below:

a. Nasal swab: Gently insert the swab head into the nasal condyle of the nasal passage, stay for a while and then slowly turn it out, then immerse the swab head in the sampling solution, and discard the tail.

b. Pharyngeal swab: Wipe the bilateral pharyngeal tonsils and posterior pharyngel wall with the swab, immerse the swab head in the sampling solution, and discard the tail.

4. Quicky place the swab into the sampling tube.

5. Break the sampling swab above the sampling tube, and tighten the tube cap.

6. Freshly collected clinical specimens should be delivered to the laboratory within 2 hours at 2℃-8℃.