Since the COVID-19 pandemic, rumors about the virus and epidemic prevention have never subsided. The "cotton swab" that is used to make nucleic acid is the hardest hit area for rumors and rumors. In the past two days, there has been another hot article, which mentions cotton swabs. I will discuss this today, hoping to help everyone reduce some anxiety.
Some Zhihu netizens even wrote the "Diary of Revenge on Nucleic Acid Testing" and raised the above questions.
My mother and I went to nucleic acid test for yesterday evening.
(I mentioned first that I have made nucleic acid in college, and the cotton swabs are all opened in front of us. The specific operation is to open your mouth - explore the cotton swab and scrape it gently twice - ok)
When it was my turn, I didn't see that the cotton swab was just taken out, and it had been a long time since I took it out. The nurse took a cotton swab and rotated it around my throat for at least 5 turns, and I vomited.
Behind me is my mother, and she was also swung six or seven times in circles by the nurse, which made her feel very painful. She said that the cotton swab had a sour smell, and her throat was always uncomfortable after she came back. I got up this morning and looked in the mirror. A small bag appeared in my throat (at the throat). The extra bag made her feel uncomfortable.
So, is the cotton swab for nucleic acid testing hygienic? Could it be that the tester is an ordinary volunteer who has never studied medicine? It is normal to vomit when testing nucleic acid, but it is not so harsh. It is like you will never give up without using a cotton swab to scrape off a layer of film on my throat.
In fact, the above netizens are purely worried.
mentioned in NetEase column " Awesome Made in China": Our country requires that the quality of degreased cotton of medical cotton swabs must meet the requirements of YY0330-2002, hold the " medical device registration certificate ", and pass the factory inspection conclusion. The cotton fibers of the cotton swabs should be soft, white, and odorless, and must not have yellow spots, stains, or foreign objects. The cotton stick should be tight inside and loose outside, and can withstand 100g tension and the cotton head does not fall off completely. The bar should be able to withstand 100g external force without permanent deformation or breaking.
There are also big differences in the production process between medical cotton swabs and ordinary cotton swabs.
In the process of making ordinary cotton swabs, the main operation is to stick cotton on paper sticks and shape them; the production process of medical cotton swabs is much more complicated. It must be produced in a clean area and must go through a sterilization procedure. The sterilization process is usually done by the ethylene oxide method, which has a wide sterilization surface and is relatively low in cost. However, because ethylene oxide may remain, the national standard specifically stipulates that after 14 days of sterilization of medical cotton swabs, the residual amount of ethylene oxide in each gram of cotton should not exceed 10 micrograms.
In fact, the "cotton swab" we use for nucleic acid is the real name of "disposable sampler", which is also commonly called a "sampling swab". It can extract samples from our upper, lower airways, blood and feces to detect whether there is a virus.
In the newly revised "Class I Medical Device Product List" by the National Medical Products Administration , it is clear that the sampling swabs are classified as Class I devices for filing. The relevant person in charge of of the National Health Commission also publicly pointed out that the production environment requirements and quality supervision standards of sampling swabs are very strict.
A small medical cotton swab contains the crystallization of many scholars' research. Whether it is the improvement of production technology or the improvement of usage methods, medical workers constantly protect your and my health with their rigor and meticulousness.
So, cotton swabs can cause cancer, this is a rumor.
After the COVID-19 pandemic, the "information epidemic" is also born with the epidemic. False information always spreads at unexpected speeds.
Now it is not only viruses, but also rumors.
The scientific power will continue to spread interesting and useful scientific knowledge as always. Welcome to continue to follow!
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Author: Su Feng
Editor: Zhao Dina
Review: Gong Zimo
Following "Strong Scientific Country" is the best decision you made today!
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