Sample Swab≠Cotton Bud, What causes some to turn yellow
4510Although the sample swab resembles a cotton swab, it is not one.
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The sampling swab used by the sampler when doing the COVID-19 PCR test is not a traditional cotton swab but a plush nylon flocked swab.
Traditional swabs are cotton, but the swabs used for nucleic acid testing are made of polyester or nylon fibers. Do many people ask questions such as why not use cotton swabs for sampling? Are the nylon fibers that fall down the throat harmful to humans? Are flocked swabs sterilized?
Cotton swab:
Cotton swab head using medical skim cotton. Cotton swab stick is generally natural birch or bamboo swab, commonly used for wound cleaning, application of pharmaceuticals, etc.
Nylon flocked swabs:
The flocking swab is used to collect samples of viruses, bacteria, and other tools, generally composed of a swab tip and swab stick.
The flocked swab tip is generally made of polyester (polyester), polyamide (nylon), and other chemical synthetic fibers from the flocking process. The swab stick is generally medical-grade ABS plastic with a break point, often used for virus or bacteria sample sampling.
The fibers falling off the swab head may cause some itching in the throat. However, in general, the sampling time is relatively short and will not lead to many fibers falling off, and it is normal for fibers to fall off occasionally.
Medical flocked sampling swabs belong to medical devices, not only produced for the record, and there are strict production environment requirements and quality control standards. Qualified products must be non-toxic and harmless. The workshop can only be produced and put into use after meeting the relevant standards of quality supervision, so the flocked swabs are harmless to the human body.
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Although the sample swab resembles a cotton swab, it is not one.
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