Virus sampling tubes can be used to collect examples of influenza viruses

The virus sampling tube is used for the collection and transportation of New Coronavirus, influenza viruses, avian influenza (such as H7N9), hfmv, measles, and mycoplasma, Ureaplasma urealyticum and Chlamydia specimens. The virus and related samples shall be stored and transported within 48 hours under cold storage (2-8 ℃), and the virus and related samples shall be stored for a long time under - 80 ℃ or liquid nitrogen environment.

Virus sampling tube collection virus sampling method:

1. First press the tongue with the tongue depressor, then extend the sampling swab head into the throat and wipe the bilateral pharyngeal tonsils and the posterior wall of the pharynx. Gently wipe the back wall of the pharynx to avoid touching the tongue.

2. Measure the distance from the tip of the nose to the earlobe with a sampling cotton swab and mark it with your fingers. Insert the sampling swab into the nasal cavity in a direction perpendicular to the nose (face). Stay in the nose for 15-30 seconds, rotate gently 3-5 times, and take out the swab.

It is not difficult to see from the method of use that the sampling of both oropharyngeal swabs and nasopharyngeal swabs is technical, difficult and easy to pollute. The quality of the collected samples is directly related to the subsequent detection. If the viral load of the collected samples is low, it is easy to cause false negative and difficult to diagnose. Some sampling swabs have low viral load, inappropriate breakpoints and are not easy for operators to break, which not only limits the sampling efficiency, but also easily leads to false negative nucleic acid detection. Therefore, the sampling swab head should be flocked with synthetic fiber instead of cotton or calcium alginate sponge.

For the material of cotton swab handle, it is recommended to use hollow polystyrene (PS) extruded tube or polypropylene (PP) injection molded indentation tube instead of wooden stick or bamboo stick. Because the wooden stick or bamboo stick containing calcium alginate and wood components is damaged and soaked in the preservation solution, it will adsorb protein and even interfere with the subsequent detection. Cotton fiber has strong adsorption on protein and is not easy to wash off.

The length of the swab shall not be too short, and the fracture position shall not be too close to the swab head, so as not to pollute the patient's body fluid during operation; The location of the breaking point shall be reasonable. When the virus sampling tube is broken, the risk of pollution caused by liquid splashing in the tube shall be avoided.

Virus sampling tube can maintain virus activity in a lower temperature range, reduce the speed of virus decomposition and improve the positive rate of virus isolation. If necessary, welcome to consult.

The above is the whole content of the virus sampling tube introduced by Xiaobian, which can be used to collect influenza virus. If you are still interested in relevant content, please continue to pay attention to Cangzhou Fukang Pharmaceutical Products Co., Ltd