No, the sampling swab is produced for sampling, itself does not contain any immersion reagent, and does not need to contain reagents; at the same time, the sampling swab belongs to the medical device, the basic requirements of qualified products is non-toxic and harmless.
Many manufacturers have said that, according to national regulations, single-use samplers belong to a class of medical device products, not only the production of the record, but also has a strict production environment requirements and quality supervision standards, qualified products are certainly non-toxic and harmless. At the same time, the "single-use sampler" belongs to the medical field of general products, can be sampled on different parts, but also applied in different testing behavior, not especially for nucleic acid detection or antigen detection production, so the swab will not contain other reagents.
Sampling swabs are called "sampling swabs", not "cotton swabs"
Because they are not the swabs used in everyday life. The biggest difference between the two is that the everyday swabs are made of cotton wool, while the sampling swabs look similar to regular cotton swabs, but the tip is actually a flocked swab. The reason for flocked swabs is that they are better suited for sampling and testing. Flocked swabs are made using nylon fiber flocking technology, where the front end is coated with short nylon fibers held in a vertical fashion, leaving no absorption holes in the entire collection area of the swab.
This way, the collected sample will not be dispersed and retained in the fiber, which is conducive to faster and more efficient elution. Data show that flocked swabs can elute more than 85% of the sample collected; traditional swabs, especially those made with skimmed cotton, do not fully collect and elute the sample.