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Precautions for throat swab collection standards

throat swab
  • Specifications

The concept of throat swab:

Pharyngeal swab specimen: Use a medical cotton swab to dip a small amount of secretions from the human pharynx. The sample taken is a throat swab sample.

Preparation before pharyngeal swab: throat swab sampling tube (tube + swab), sealed bag of suitable size with the performance general biological hazard sign, tongue depressor, etc. Check the label on the outside of the throat swab (whether there is a date, specification, whether the color of the sampled liquid has deteriorated, whether it is turbid, whether there is sediment, etc., but also complete the information of the sampling tube such as: name, sampling unit, and paste the sampling number)

Communicate with the examinee first and inform the examinee in advance not to smoke, drink, eat chewing gum and irritating and tasteful food within 30 minutes before sampling.

When sampling a throat swab:

1. First, check personal information with the subject.

2. Then tear off the outer packaging of the sampling swab and take out the sampling swab;

3. Let the subject open his mouth to make an ah sound, exposing the throat, and if necessary, use a tongue depressor to press down the tongue (lightly press the front 2/3 of the tongue and the back 1/3);

4. Take out the sterile swab, gently and quickly wipe the bilateral pharyngeal tonsils and the back wall of the pharynx 3 times, and put the swab head into the preservation solution.

5. At the mouth of the preservation tube, fold off the tail of the swab firmly, discard the tail, tighten and cover the tube cap (strictly perform aseptic operation),

6. Check the patient’s name again after sampling;

7. Put it into a sealed bag and a special transfer box, and quickly send the sample to the laboratory for inspection.


1. When putting the swab into the tube, it should be placed vertically, and don’t wipe it to the bottle mouth to avoid contamination. When putting it in the transfer box, it should be placed vertically to avoid liquid leakage.

2. It is best to send/sent to the laboratory for inspection on the day of sampling.

3. Before submitting for inspection, the appropriate specimen must be consistent with the submitted inspection form. The appearance of the sampling tube must be clear and well-known and basic information. Specimens without basic information cannot be tested; the submitted specimens must be submitted (or submitted in advance in the electronic version) of the screening information form , Submit the inspection form and other materials. The submitted materials should be ensured not to be contaminated and not to be placed together with the specimen.

4. In order to prevent sectioning when sampling, it should be avoided within 2 hours after the patient has eaten. The collection action is gentle, stable and agile to prevent discomfort to the patient

5. During the collection process, the throat swab should not touch other parts to ensure the accuracy of the specimen.

6. When you decide to do a throat swab, please do not use antibacterial drugs.

7. The depth of throat swab collection and the length of mucosal contact time. When collecting throat swabs, if the subject’s vomiting response is relatively large, the sampling time is not enough or poor quality swabs are used, which may cause false negatives and delay treatment.

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