flocked swabs definition

Posted on 2021年9月3日2021年12月21日 by Dr. Lee

Flocked swab using spray dense planting nylon fiber technology;The volume of samples collected and released is 3 times higher than that of traditional swabs. Ensure the survival rate of cell samples, no residual fatty acids, and will not affect the test results.

Picture of sampling flocking swab

Why use flocked swabs？

COVID-19 is New Coronavirus’s variant coronavirus, which can cause pneumonia after human infection. It belongs to an acute respiratory infectious disease, which is highly infectious and generally susceptible to people. It is easy to replicate in the upper respiratory tract of human body. In general, new crown nucleic acids are detected rapidly within 96 hours after infection. Testers can find viruses in the human upper respiratory tract. Experiments show that flocking swab can quickly elute > 95% of the original samples, and easily improve the detection sensitivity.

Application of sampling flocked swabs.

The upper respiratory tract of the human body includes the nasal cavity, pharynx and throat. That is to say, if a person is infected with COVID-19, he can extract the nucleic acid of the virus in the nasal cavity, pharynx and larynx in 96 hours. Therefore, we generally sample these locations when we carry out the rapid detection of new crown nucleic acid.

we distinguish swabs by different sampling positions. For nasal sampling, we become nasopharyngeal flocked swabs; For oral sampling, we become oropharyngeal flocked swabs.

What is the difference between nasopharyngeal swabs and oropharyngeal flocked swabs?

Nasopharyngeal swabs and oropharyngeal swabs differ in material hardness in addition to the differences in sampling sites. The nasopharyngeal swab is generally slender and soft, and can change its shape along the nasal cavity, which is convenient for the sampling personnel to probe into the upper respiratory tract along the nasal cavity. The oropharyngeal swab will be thick and hard.

In terms of comfort, there are also great differences between the two. Since gas exchange is often carried out in the nasal cavity, the swab shall be fully extended to the end of the nasal cavity during sampling to ensure that sufficient concentration of samples are collected. This usually brings very uncomfortable feeling to the subject, and sometimes even leads to epistaxis.The oropharyngeal swab only needs to collect the pharyngeal sample, and only needs the person to open his mouth for collection. Although it occasionally causes a temporary feeling of nausea, the discomfort will not last too long.

There are also obvious differences between the two in drug loading. Studies have shown that in patients infected with the new crown virus, the amount of drug carried on the nasopharyngeal swab is significantly higher than that on the oropharyngeal swab. In other words, the detection amount of nasopharyngeal swabs is generally higher than that of oropharyngeal swabs.

In addition to nasopharyngeal flocked swabs and oropharyngeal swabs, there are anal swabs. As the name suggests, anal swab is a kind of test for patients with gastrointestinal symptoms. It can effectively improve the detection rate, but it is not widely used because of the inconvenience of sampling.

Attention

After sampling the flocking swab, we should immediately put the swab into the storage tube to avoid polluting the sample. Then, the subsequent rapid detection process of new crown nucleic acid was carried out. No matter what kind of swab is used, the process of rapid detection of new crown nucleic acid is the same. The rapid detection of new crown nucleic acid was completed in four independent areas of the laboratory, and the test results were obtained.

How to use cm-98000 oral swab

Posted on 2021年9月2日2022年3月22日 by Dr. Lee

How to use cm-98000 oral swab

Brief description

A large number of clinical experiments on cell medical (Dongguan) Co, Ltd. nylon flocked swab show that CM nylon flocking swab has better collection and transportation effect on clinical microbial samples than ordinary sterile cotton swab. This is especially true for those specimens that cannot be submitted for examination in time and placed for too long.

cm-98000 oral swab

advantage

1. The unique jet nylon fiber implantation technology increases the collection and release of specimens.

2. The total length of the swab is 14.5cm, and the plastic rod has a unique breakable design.

3. The villus texture can collect more target analytes.

4. There is no residual specimen, so the specimen processing process can be accelerated.

5. Swabs are sterilized and packaged separately

How to use cm-98000 oral flocked swab

① Tear the sealing paper on the disposable oral swab package, and gently take out the disposable sampling swab from the bag（ Note: the head of disposable oral swab shall not touch other objects other than the inner wall of oral cavity to avoid contamination.)

② . extend the hand-held sampling swab into one side of the oral cavity, from inside to outside at the inner wall mucosa, and then move the swab up and down for 15-20 times. The number can be increased according to the actual situation, with moderate strength. It is appropriate to stick close to the inner wall mucosa of the oral cavity, so as to ensure that the one-time sampling swab head can dip in the exfoliated cells of the oral mucosa everywhere; According to the same method, collect on the other side of the inner wall of the oral cavity.

③ After collection, please take out the disposable sampling swab from the mouth and put it into the sampling tube, push the disposable sampling swab head, put the sampling head into the storage tube, tighten and save it（ Note: too many rotations will lead to dilution or loss of samples. After sampling, make sure that the disposable sampling swab does not touch any other object.)

ABOUT US

Cell medical (Dongguan) Co.,Ltd., a swabs design / swabs manufacturer, has many years of experience in medical application molding and flocking treatment heads and swabs.

Main products:Flocked Swabs,VTM Kits,Viral Transport Medium,VIRUS Collection & Transport Kits,Disposable virus sampling tube,Op swabs,Np swabs,etc.

Contact us

E-mail：flockedswabs@gmail.com
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10ml virus sampling tube

Posted on 2021年9月1日2021年9月1日 by Dr. Lee

10ml virus sampling tube

Brief introduction: the novel coronavirus pneumonia tube is 10ml, and the non inactivated virus transport medium (preservation solution) is 3ml, which is mainly used for COVID-19 sampling, nucleic acid sampling, new crown pneumonia sampling, COVID-19 sampling matching.

Cell medical (Dongguan) Co., Ltd., providing disposable virus sampling tube 10ml, 5ml, 2ml, 10ml, and coronavirus sampling tube, welcome to consult.

E-mail：flockedswabs@gmail.com

Our factory is located in No. 98, Wusha street, Chang’an Town, Dongguan City, Guangdong Province, China.

Product Article No.: vtm-b-cm0403 series

specification: 1 5ml / 10ml virus sampling tube (containing 3ml preservation solution), 1 sampling swab (nasal swab, pharyngeal flocked swab, optional)

packaging: 1 person use.

price: welcome to consult.

10ml virus sampling tube (with 3ml preservation solution), 1 sampling swab（Nasopharynx swab or oropharyngeal swab）)

Product information

specification and packaging

For one person: 1 5ml / 10ml preservation tube (containing 3ml preservation solution), 1 nasal sampling swab, 1 pharyngeal sampling swab and 1 biosafety bag. Customized services can also be provided as needed

purpose

For the collection, transportation and storage of virus DNA / RNA samples. The product is suitable for pharyngeal swabs, nasal swabs or specific samples after sampling

The stored samples can be used for subsequent clinical experiments such as nucleic acid extraction or purification.

storage conditions and validity period

Stored at 15-30 ℃ for 24 months before use.

After use, the sample can be stored at room temperature for 1 week. If it needs to be stored for a longer time, please put it at – 80 ℃。

[usage]

1. Before sampling, mark the relevant sample information on the label of the sampling tube.

2. According to different sampling requirements, use a sampling swab to sample at the corresponding target position.

3. Quickly immerse the sampled swab into the sterile sampling solution in the tube.

4. Break the part of the swab higher than the sampling tube, tighten the tube cover and shake it several times.

5. Place the sampling tube in the biosafety bag and seal it for transportation.

Note: specific sampling methods are as follows:

a) Nasal swab: gently insert the swab head into the nasal palate in the nasal canal, stay for a moment, and then slowly rotate and exit. Swab the other side of the nose with another swab

Hole, immerse the swab head into the sampling solution, and discard the tail（ (suitable for sampling with this product)

b) Pharyngeal swab: wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with a swab. Similarly, immerse the swab head in the sampling solution and discard the tail（ (suitable for sampling with this product).

how to collect nasopharyngeal swab?

Posted on 2021年9月1日2021年12月21日 by Dr. Lee

how to collect nasopharyngeal swab?

After several times of nucleic acid sampling and testing, citizens wondered: why do some people require nasopharynx swabs and some people can collect oropharyngeal swabs? Today, experts from cell medical will explain to you.

What is a sampling swab?

At present, except for special diseases, COVID-19’s nasopharyngeal swabs and oropharyngeal swabs are the most common ways of collecting.

Studies have shown that nasopharyngeal swabs have higher detection rate of COVID-19 nucleic acids than oropharyngeal swabs. Because the nasopharyngeal cavity is relatively closed and the virus is easier to accumulate. However, whether it is oropharyngeal swab or nasopharyngeal swab, the key is that the collection action must be standardized, in place and meet the standards. As long as the acquisition is standardized, both methods can achieve the expected detection purpose.

How to collect a nasopharyngeal swab?

nasal swab collection method_How to collect a nasopharyngeal swab？

1. The patient’s head tilts back (about 70 degrees) and persists. 2. Use a swab to estimate the interval from the ear root to the nostril. 3. Insert from the nostril pen to the face. The deepening interval should be at least half of the length from the earlobe to the tip of the nose. Reach the posterior nasopharynx after encountering resistance, stay for several seconds to absorb secretions (generally 15 ~ 30s), and rotate the swab for 3 ~ 5 times. 4. The swab should be gently rotated and taken out, and the swab head should be immersed in a collection tube containing 2ml lysate or cell preservation solution containing RNase inhibitor. 5. Break the sterile swab rod at the top, discard the tail, tighten the tube cover and close it with sealing film.

oropharyngeal swab collection

collection method of oral swabs

1. Ask the patient to gargle with normal saline or clear water first.

2. Wet the flocked swab in sterile normal saline.

3. The patient sat down with his head tilted back and his mouth open, accompanied by an “ah” sound.

4. Fix the tongue with a tongue depressor, and the swab jumps over the root of the tongue to the posterior pharyngeal wall, tonsil recess, lateral wall, etc.

5. The bilateral pharyngeal tonsils should be swabbed back and forth with moderate force for at least 3 times, and then the posterior pharyngeal wall should be swabbed for at least 3 times, 3 ~ 5 times.

6. Remove the swab to prevent touching the tongue, pituitary, oral mucosa and saliva.

7. Immerse the swab head into the preservation solution containing 2 ~ 3ml virus.

8. Break the sterile swab rod near the top, discard the tail, tighten the tube cover and close it with sealing film.

After the introduction of our experts, do you have a deeper understanding of sampling swabs? If you want to know more product details and prices, please leave us a message. We will serve you wholeheartedly!

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virus sampling tube 10 in 1 mixed sample detection

Posted on 2021年9月1日2022年3月22日 by Dr. Lee

10 in 1 mixed sample detection virus sampling tube

Ten in one hybrid collection and detection technology is to collect 10 flocked swab samples collected by 10 people into a collection tube for nucleic acid detection. Once we find positive in the mixed collection screening, we will immediately notify the relevant departments to temporarily isolate 10 subjects in the mixed collection tube. Single tube swabs were collected again for reexamination to determine which of the 10 subjects was positive; If the test result is negative, it means that all ten samples are negative and the mixed ten people are safe.

Mixed detection greatly improves the detection ability of nucleic acid. Using this combination mode, the daily detection ability can be increased by 10 times without increasing human and material resources. It can carry out more screening and early diagnosis, strive to find patients one minute in advance, isolate patients one minute in advance, reduce transmission and save social costs.

Product overview:

① It is applicable to large-scale testing projects such as schools, factories, units and urban areas. It has the advantages of high screening efficiency and resource saving.

② The sampling tube for mixed sample detection of virus uses medical grade PP as raw material. Unique structural design and manufacturing technology prevent night leakage. It has the characteristics of no RNA enzyme, no DNA enzyme, no endotoxin, high temperature resistance, high pressure resistance and high-speed centrifugation.

③ 10ml sample preservation solution (VTM solution) is pre installed in 50ml sampling tube for 10 person mixed sample detection.

④ The head end materials of virus sampling swab include flocking, polyester fiber, rayon, etc.Produced by special process, it has no DNA / RNA, no RNA enzyme and no DNA enzyme. It has the characteristics of high collection rate, high release rate, convenient operation and no sundries. The sampling success rate and detection rate are greatly improved.

⑤ Biosafety bag: for preservation and transportation after sample collection to prevent accidental leakage and improve safety.

⑥ Each set of virus sampling tubes includes: 1 sampling tube pre loaded with virus preservation solution, 10 individually packaged swabs。

Instructions for use:

10 in 1 mixed sample detection virus sampling tube Instructions for use

①. Remove the paper and plastic packaging of the swab from the torn place

②. Take the swab to the target part for sampling

③. Immerse the swab head of the sampling swab into the virus preservation solution

④. Break the swab rod

⑤ .at the pharyngeal breaking point. Repeat steps ① ~ ④ for the other 9 sampling times. After collecting 10 swab samples in the sampling tube, tighten the tube cap and shake gently for several times to complete the sampling.

⑥ .immediately place the sampling tube in the biosafety bag, seal and transport it for inspection.

What is a Flocked Swab

Posted on 2021年8月31日2021年12月18日 by Dr. Lee

what is a flocked swab

Many customers ask me, why is use flocking sampling swabs? You’ll know from the comparison below：

The flocked sampling swab of cell medical (Dongguan) Co, Ltd. is composed of nylon short fibre velveteen wool head and medical-grade ABS plastic rod. The volume of samples collected and released is 3 times higher than that of traditional swabs.

Ensure the survival rate of cell samples, no residual fatty acids, and will not affect the test results.

cm flocked swabs Display diagram

The sampling swab set contains a swab and a cell preservation solution. After collecting samples with swabs, we stored them in a liquid-based cell preservation solution. It ensures the integrity of sample DNA,

How are flocked swabs made?

Made of nylon fibre flocked technology, and the front end with nylon short fibers fixed in a vertical manner.

So that there is no absorption hole in the sampling area of the sampling swab.

The sample we obtained with a cotton swab does not disperse and remains in the fiber

Which is beneficial Faster and more efficient elution.

Traditional cotton swabs cannot completely collect and elute samples while flocking swabs can elute 95% of samples.

Therefore, the use of flocked swabs has great advantages for various sample collection applications.

What is a flock nylon swab?

Nylon flocking sampling swabs are specially used for sample collection.

And cotton swabs can also be used for sample collection, but the number of samples collected and the collective effect of the two cannot be compared.

Flocked nylon swab with outstanding sample collection and release capabilities.

It can quickly absorb trace amounts of samples, and the release efficiency is high.

The increase in the number of targets helps to improve the sensitivity of rapid diagnostic tests.

product features:

flocking swab has a good sampling effect, and the sample collection amount and release amount are as high as 95%;
our unique technology increases the comfort of the collected;
ethylene oxide sterilization has no inhibition on the subsequent application;
swab using spray dense planting nylon fiber technology;
nylon fiber swabs can better collect clinical samples and immediately release them into the liquid delivery medium.
It has an ABS rod with a “breakpoint“.

In short, the upright nylon fiber is like a soft brush, which can collect more cell samples. Nylon flocked swabs can absorb and release more samples.

How do you use a Copan swab?

What are flocked swabs used for?

cytological sample processing, virological cell culture, DFA test, enzyme-linked immunosorbent assay, PCR test, molecular diagnosis, epidemic disease detection, etc.

1. Disposable sampling swabs for oral cavity and nasopharyngeal swab.

2. Gynecological sampling swab.

3. Virus and bacteria sampling swab.

4. Disposable DNA sampling swab.

5. Cell sampling sterile swab.

6. Laboratory test sampling swab.

Our flocked swabs are famous for their stable and reliable performance and excellent absorption and elution ability.

E-mail：flockedswabs@gmail.com
Welcome to consult, We will serve you wholeheartedly.
Cell medical (Dongguan) Co., Ltd.
China swab and VTM kits manufacturers

Inactivation Virus transport medium

Posted on 2021年8月30日2021年8月30日 by Dr. Lee

Inactivation Virus transport medium

purpose

This product is used to inactivate a variety of viruses, such as clinical 2019 ncov, influenza, avian influenza, hand, foot and mouth, measles virus, norovirus, rotavirus and other virus samples, as well as the transport of virus nucleic acid. Compatible with various virus nucleic acid extraction kits on the market, it can realize seamless connection with downstream nucleic acid extraction.

Product specification:

Model	Virus transport medium (inactivation)	Number of swabs
VTM-B-CM040320S	1 sampling tube with 3ml VTM (inactivated)	2 flocking cotton swabs (nasopharyngeal swab + oropharyngeal swab)
VTM-B-CM040311S	1 sampling tube with 3ml VTM (inactivated)	1 flocking cotton swab (nasopharyngeal swab)
VTM-B-CM040312S	1 sampling tube with 3ml VTM (inactivated)	1 flocking cotton swab (oropharyngeal swab)

Flocked swab+tube with Viral transport medium Multiple options

Product advantages:

Safer.

Virus lysis buffer contains a variety of virus inactivating components, which can inactivate the virus efficiently and ensure the safety of transportation and testing personnel.

More stable.

The preservation solution contains RNase inhibitor to ensure the integrity of nucleic acid and prevent false negative results. There is no need for storage and transportation at 2-8 ℃ after sampling, and the nucleic acid quantitative results will not be affected after being stored at room temperature for 48 hours. The nucleic acid in the positive sample can still be detected after the virus is stored at room temperature for 7 days, which saves the storage and transportation cost of virus samples.

More convenient.

Our self-developed sample tube and flocked swab are combined into a set of products, which not only increases the safety of the operator, but also ensures the stable adsorption and release of samples, so that more samples can be collected in the same operation.

Nylon flocking swab This design ensures the maximum adsorption and release of samples, and the same operation can collect more samples than other swabs. Special design – easily broken groove

Inactivated or non inactivated, how to choose?

goods	Non inactivated virus sampling tube	Inactivated virus sampling tube
Product name	Virus sampling kit	Virus transport medium (inactivation)
Quality Certification	MSDS,CE,ISO	MSDS,CE,ISO
purpose	Nucleic acid detection and virus isolation	For nucleic acid detection only
Composition	Preservation solution: HEPES, amino acids, protein stabilizer and other components are added to slow down the decomposition of virus.	Lysate: guanidine with appropriate concentration combined with a variety of virus cleavage components can inactivate RNase and ensure the integrity of nucleic acid
Transportation conditions after sampling	Transport at 2-8 ℃ for no more than 48 hours	Room temperature
Does the sample need to be inactivated?	yes. 56 ℃ for 30 minutes	No need. The sampling solution has inactivation function without further heating

producting process

Cell medical (Dongguan) Co, Ltd. is a professional manufacturer of virus transport medium.

E-mail：flockedswabs@gmail.com

VTM viral transport medium tube

Posted on 2021年8月30日2022年3月22日 by Dr. Lee

VTM viral transport medium tube_virus sampling tube-universal transport medium

1.[information]

1. Common name: disposable virus sampling tube.

2. Product Name: universal transport medium.

3. Specifications and models vtm-a-cm and vtm-b-cm series.

2.[package specification]

20 copies / box.

VTM viral transport medium tube-disposable sampling kits

3.[VTM use]

For sample collection, transportation and storage.

4.[viral transport medium tube test principle]

On the basis of Hank’s, potassium chloride, magnesium chloride and calcium chloride are added to provide necessary nutrient ions for pathogenic bacteria to make it more specific. The preservation time is longer, the integrity of pathogenic bacteria morphology is preserved to a greater extent, and the extraction rate of pathogenic bacteria is improved.

5. [structure composition ]

flocked swab and virus transport medium.(or universal transport medium).

6. [sample requirements]

the collected samples shall be sent to the laboratory within 48 hours at 2-8 ℃. If they cannot be sent to the laboratory within 48 hours, they shall be stored at – 70 ℃ or below. The samples shall be inoculated and separated as soon as possible after being sent to the laboratory.

7.[storage conditions and validity period]

1. The products shall be stored in a clean, hygienic, dry and ventilated environment;

2. The temperature is 5 ℃ ~ 35 ℃. 3. Relative humidity ＜ 85% RH. 4. Product shelf life: 12 months.

universal transport medium and flocked swabs

8.[usage]

Firstly,before sampling, mark relevant information on the label of the sampling tube.

Secondly,use the corresponding sampling flocked cotton swab for sampling.

Then,after sampling, quickly put the cotton swab into the sampling tube, break the part higher than the sampling tube, and tighten the tube cover.

Finally,see the following for specific sampling methods.

a)Nasal swab: gently insert the sampling head into the nasopalatine part of the nasal catheter, stay for a moment, and then rotate it slowly to exit. Immerse the collected specimen into the liquid in the sampling tube, break the excess part and discard it, and tighten the sampling tube cover.

b) Pharyngeal swab: wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with sampling head. Soak the collected specimen in the sampling solution, break the excess part, discard it, and tighten the sampling tube cover.

9.[precautions]

1. After collecting pathogenic bacteria samples, we should completely insert the disposable sampling flocked cotton swab into the preservation solution to retain pathogenic bacteria to the greatest extent.

2. The collected samples must be fresh and sent for examination in time to avoid the death of pathogenic bacteria.

3. Forbidden to use products with damaged packaging and expiration date to prevent pollution.

Note: For in vitro diagnosis. For virus sampling, transportation and storage.Including COVID-19.

Food can lead to serious events; It has certain irritation to eyes and skin. If it accidentally splashes into eyes, rinse with clean water.

10.[Manufacturer information]-VTM virus sampling tube kits

[name of manufacturer] cell medical (Dongguan) Co, Ltd .

[address] No. 98, Wusha street, Chang’an Town, Dongguan City, Guangdong Province, China .

[E-mail]：flockedswabs@gmail.com

CM company take you to know the virus sample preservation solution.

Posted on 2021年8月28日2022年3月22日 by Dr. Lee

Cell medical (Dongguan) Co, Ltd.,Take you to know the virus sample preservation solution.

Virus sample preservation solution,also known as disposable virus sampling tube.When we first came into contact with this term, we must be very curious.

However,what is DNA / RNA virus sampling tube？

First of all, virus sampling tube is a liquid that protects the tested substance of the virus by immersing the sampling swab virus sample in the sampling tube. Currently, it is mainly used for the collection, storage and transportation of common virus samples such as COVID-19, HFMV and so on. Medical workers can take tissue samples from the throat or specific areas using throat swabs and nasal flocked swabs. Samplers then store the samples for subsequent clinical trials such as nucleic acid extraction or purification. The virus and related samples can be stored at -70℃ or liquid nitrogen for a long time.

Usually,we divide the virus storage solution into two kinds. the non-inactivated virus storage solution and the inactivated virus sampling tube. The non inactivated type can protect viral proteins and nucleic acids. Maintain virus activity and facilitate culture and detection. Although the inactivated type can make the virus no longer have physiological activity, lose infectivity and pathogenicity, and have the ability to reproduce. Inactivate the virus, eliminate secondary infection,and protect the safety of transportation and testing personnel.

disposable virus sampling tube

About inactivated sample preservation solution.

There may be a small partner who will question whether the inactivated type will inactivate the virus? How do you check it? Don’t worry, the purpose of using inactivated virus sampling tube is to lyse nucleic acid and detect nucleic acid by subsequent RT-PCR.

After extraction with most commercial kits, the quality of DNA or RNA obtained is good and the yield is high. So,it can complete various gene detection and analysis experiments, such as PCR or qPCR, and save transportation costs.

It is suitable for COVID-19, hfmv and other common virus samples.

About inactivated sample preservation solution.

The virus preserved in non inactivated virus sampling tube has better integrity and higher detection rate. Researchers use it for scientific research, including nucleic acid testing.
Cryogenic storage without freezing, does not destroy the virus shell, easy long-distance transportation;
Application:H1N1 influenza virus and any other Virus swab sampling;
The antibiotics in the preservation liquid can effectively prevent bacterial and fungal infection;

Contact us

Nasal swab painful

Posted on 2021年8月27日2022年3月22日 by Dr. Lee

People often feel scared during the sampling process using nasopharyngeal swabs. However, is it really painful to use a nasopharyngeal swab?

It is certain that nasopharyngeal swab testing does not produce painful symptoms, but some patients may feel uncomfortable.

The doctor used a medical flocked swab to enter the nasopharynx and then took a small amount of secretions. The hospital can isolate pathogenic bacteria through bacterial culture.

During the operation of the sampler, the patient will have slight nausea and discomfort, which is generally within a tolerable range. The medical staff’s techniques are gentle and skilled, so there is no pain. We can check the bacteria that cause the infection through nasopharyngeal swabs, and select targeted drugs for treatment based on the results of the tests.

Which is painful, nasal swab or throat swab？

In contrast, nasal swabs are more painful. Pharyngeal swab is the behavior that doctors use a medical flocked swab to dip secretions from the throat for monitoring. During the collection of pharyngeal swab, the tested person may have symptoms of nausea and vomiting without other obvious pain. Nasal swab is to insert a cotton swab into the deep part of the nasal cavity to dip secretions for monitoring.

Application scenario diagram

Why nasopharyngeal swabs are better than oropharyngeal swabs

According to reports in the literature, the positive rate of nasopharyngeal swabs is higher than that of oropharyngeal swabs.
The patient has good tolerance and can basically take samples without anesthesia after skilled operation
The exposure risk of the sampler is lower than that of oropharyngeal swabs.