Tag Archives: Virus sample swab

Flocked Swabs For Sample Collection

Flocked Swabs For Sample Collection

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The nucleic acid test (PCR TEST) uses a flocked swab instead of a cotton swab.

Flocking is a craft, not a material

　　 Flocking is not the fluff of any plant, but a very common fabric treatment process.

         Widely used in the textile industry, automobile manufacturing, printing industry, chemical industry and other fields.

　　 The flocking process means vertical fixing of some cut or milled short fibres to some kind of adhesive-coated surface. Short fibres are usually nylon, polyester, or other artificial fibers. The range of planting them is very wide, and surfaces such as cloth, plastic, wood, leather, paper, etc. can be flocked.

　　Flocking only needs three things, 1, short fibers; 2, adhesive, 3, some kind of surface

　　 Flocking is very common in everyone’s life, just usually without realizing it. For example, flocking fabrics can be found on clothes, curtains, carpets, and furniture. Usually, those surfaces that are fluffy and comfortable to the touch are brought by the flocking process.

　　 In addition to the decorative effect, the flocking technology has also been tried by scientists to make graphene lithium battery anode sheets; make special lipophilic and hydrophobic materials to absorb marine oil spills, etc.

The principle of flocking

　　 At present, the most commonly used flocking method is electrostatic flocking. After the fluff enters the high-voltage electric field, it contacts the negative electrode and is negatively charged. 

　　 Don’t worry if some fibers fall to the side and don’t stick to the side. After they touch the positive electrode side, the negative charges on the surface are completely neutralized, and they will fall to the negative end due to the force of the electrostatic electric field. Repeat the above movement until they are all stuck.

Flocked swabs for nucleic acid testing

　　 The flocking swabs used for nucleic acid detection are mostly “planted” with nylon short fibers. The reason for choosing flocked nylon over cotton swabs is the functional need for sampling.

Flocked swab

Flocked swab

Any material design is purposeful, and flocked swabs for nucleic acid detection need to meet the following characteristics:

　　  ② After the swab is put into the preservation solution, it has to “let go” to release the biological sample, and it cannot hold the sample firmly for a second or divide it. ③ It cannot react with biological samples and destroy the samples.

　　 Because cotton itself has superior hydrophilicity and adsorption, once it comes into contact with the sample, it is like the characters in Qiongyao play. In contrast, nylon flocked swabs are like a scumbag “can take it and put it down.

　　 Therefore, the collection and release volume of nylon flocking swabs is much larger than that of traditional winding cotton swabs. Experimental studies have shown that the collection and release volume of flocking swabs can reach 95% of the samples, while cotton swabs are only about 20%.

　　In fact, the ability of cotton swabs to grasp the sample is not bad, but after inserting the preservation solution, the flocked swab can quickly let go of the sample to be eluted, but the cotton swab will make the cells stuck in the fiber mass and cannot be separated.

　Otherwise, the nucleic acid will be degraded before the detection begins, and the correct result will definitely not be detected.

　　 Because of this, it is superfluous to worry that nylon is a synthetic fiber that is harmful to the human body. Flocked fibers have even been tried in regenerative medicine to help repair damaged bones and cartilage. By implanting the flocked fibrous scaffold, the properties of the extracellular matrix are modeled, allowing stem cells to adhere to it to proliferate and differentiate; and provide sufficient space for the newly synthesized matrix and capillaries to enter.

Chinese Medical Swab Suppliers Manufacturers

Chinese Medical Swab Suppliers Manufacturers

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Cell medical (Dongguan) Co., Ltd. Flocking sampling Medical Swab manufacturers can be customized according to customer needs.

Cell medical (Dongguan) Co., Ltd. is a comprehensive high-tech medical consumables company and an OEM factory for flocking swabs. We support customized production, our swab OEM factory produces flocking swabs, throat swabs, nasal swabs, oral swabs, sponge swabs, virus sampling tubes, virus transport media, and sample preservation solutions. Our GMP factory was built in 2016, and the factory has an ISO13485 quality management system, CE, FDA and other qualifications.

ABOUT VTM kits and swabs manufacturer

ABOUT VTM kits and swabs manufacturer

  We support ODM and OEM

  Our factory has a number of automated production lines. We support customized production, OEM, ODM, etc., and jointly develop and design products with customers. Willing to challenge all kinds of harsh swabs.

  Customization of flocking swabs, customization of VTM kits, customization of a virus transfer medium, customization of virus collection and transfer kits, customization of disposable virus sampling tubes, customization of nasopharyngeal swabs, customization of oropharyngeal swabs, etc.

      Welcome to the factory for consultation, we will serve customers wholeheartedly and develop high-quality flocked Medical swabs together with customers.

 

 

 

Features of our flocked swabs

Covid Swab Test flocked swab

Covid Swab Test flocked swab

  1. The flocked swab is made of nylon fibre flocking technology, and the sample collection and release amount is as high as 95%;

  2. Nylon nails are fixed vertically, the elution speed is faster and the efficiency is higher;

  3. Single independent packaging to avoid pollution.

  4. Strict process conditions, DNase free and amplifiable human DNA.

  5. The tube body is transparent and the inspection material is visible.

  6. The unique patented shell design ensures air circulation in the shell and prevents the detection material from becoming mouldy due to the humidity of the sealing environment. It avoids magazine pollution in the outside air and affects the detection quality.

Advantages of our flocked swabs

  1. Especially designed for virus sampling and DNA micro-samples. Especially for trace samples such as sweat, semen, blood, dandruff, oral cells, etc., it has excellent collection performance.

  2. It can quickly adsorb trace samples and release a high aging rate.

        3. Flocked swabs become ideal for PCR work.

  4. The front end is more precise and is suitable for cell extraction in the nails of victims or suspects.

  5. The unique flocked swab breakpoint design is beneficial to the automatic extraction workstation for sample extraction.

  6. Packaged in a clear plastic tube to avoid biological contamination.

Flocked Sterile Swabs

Flocked Sterile Swabs

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Disposable sampling swabs, We believe you are familiar with them in the past two years because most of the testing tools used for nucleic acid testing (PCR tests) are disposable sampling swabs.

Usually, we see most nasal swabs and throat swabs, and the sampling swabs we commonly use are flocking swabs.

The flocking swab is a disposable sampling swab composed of a nylon short fibre fluff head and abs plastic rod.

Recently, there have been many concerns about rapid antigen detection on the Internet.

One of them is that if the “single-use sample collection swab” (sampling flocked swab) used in the antigen test is “non-sterile” and “non-sterile”. Bacteria” products. There are risks when using it.

Citizens disinfect the sampling swab with alcohol before conducting antigen testing at home?  ( Alcohol disinfection is not advisable)

Experts and industry insiders say such concerns are unnecessary as long as qualified products are available through formal channels.

Discard damaged or contaminated swabs.

Specimen collection sterile flocked swab

Specimen collection sterile flocked swab

Are there risks to using “non-sterile” “non-sterile” Specimen collection swabs?

There are two main issues that netizens worry about:

One is to worry about the “bacteria” of the sampling swab, which will affect the results of the antigen test, such as “false positives”;

The second is to worry about the “bacteria” of the sampling swab. During the sampling process, “bacteria” will enter the human body with the sampling swab and affect health.

Nasopharyngeal swab test

Nasopharyngeal swab test

Regarding the effect of “bacteria” sampling swabs on antigen test results, experts said that this is a misunderstanding caused by confusing bacteria and viruses.

You know, the antigen test “looks” for the antibodies produced by people infected with the new coronavirus.

The display window of the reagent strip contains a protein that recognizes the antibody, like a dam, blocking the colloidal gold that binds the antibody to the virus. So it appears red in the display window.

Therefore, even if the sampling swab contains “bacteria”, the kit will “ignore” it and focus on “finding” the antibodies produced by the new coronavirus infected person.

Since the kit is not interfered with by “bacteria”, it will not affect the results of antigen detection.

For some people who think that “bacteria” sampling swabs will affect human health, experts say that this may be due to a lack of understanding of “sterile” products.

Sterile

The single-use Specimen collection swab can currently be applied for registration as a second-class medical device, and can also be registered as a first-class medical device (the third-class is the highest level) in the regulatory department.

If it is a Class II medical device, it must meet the sterility requirements when it leaves the factory. While a Class I medical device has no relevant requirements and can be listed in the state of “non-sterile” and “unsterilized”.

Experts said that “sterility” refers to the state of no viable microorganisms. All medical devices must meet certain hygienic requirements, such as strict control of the number of microorganisms before they can be qualified for the market.

Flocked Sterile Swabs

Flocked swabs are mainly used for oral and nasopharyngeal sampling, cervicovaginal sampling, and laboratory testing.

Sterile Flocked Nasopharyngeal Swab is a 100% nylon flocked swab that provides exceptional absorption quality with a flexible handle engineered to reach remote areas of the nasopharynx for specimen collection.

According to different uses, it can also include nasopharyngeal swabs, throat swabs, oral swabs, DNA swabs, and cervical swabs.

It is similar to the above classification, but it is slightly different.

For laboratory testing centres and hospitals.

flocked swab --- CellMedical

flocked swab — CellMedical

What are the advantages of flocked Sterile swabs?

Using nylon fibre flocking technology. The front end of the swab has nylon staple fibres fixed vertically. By making the entire collection area of ​​the swab free of absorbent holes. The sample does not scatter and become trapped in the fibres, facilitating faster and more efficient elution.

This makes flocked swabs ideal for PCR work, as flocked swabs are biocompatible and ideal for PCR work.

What is A Covid-19 NP Swab?

What is A Covid-19 NP Swab?

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The COVID-19 Swab test is an important part of the anti-epidemic work, and it is extremely important to standardize the operation of sampling techniques.

All sampling operations must be standardized. In order to provide a strong guarantee for the accurate reporting of subsequent nucleic acid testing.

Nasopharyngeal (NP) swabs are the primary sample type for respiratory molecular pathogen testing.

During the 2019 novel coronavirus infectious disease (COVID) pandemic, NP swabs became central to the detection of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2).

Unfortunately, NP swab collection can be very uncomfortable for some patients.

Because when collecting nasal swabs, a relatively long flocked swab, is directly inserted into the nasal cavity of the person being collected.

However, nasal swabs will not cause pain if the operator is appropriate, but some people with sensitive noses or diseases may experience mild discomfort.

Np swab covid test meaning?

Np swab is the nasopharyngeal swab test, which refers to a relatively conventional method for detecting viruses.

Nasal swab testing mainly involves inserting a relatively long sterile flocked swab into the patient’s nasal cavity.

It was then collecting secretions from the nasopharynx through the nasal cavity.

And then testing these secretions in various aspects, such as bacterial culture And drug sensitivity test to determine the source of infection and the type of microorganisms.

Symptomatic treatment according to the test results, and a drug sensitivity test can also be used to determine which drug is more sensitive.

Use the more sensitive drug for treatment.

What should medical staff pay attention to when collecting nasopharyngeal swabs?

All healthcare professionals performing nasopharyngeal swab tests must wear the recommended personal protective equipment (PPE), which should include N95 masks, disposable caps, goggles, protective clothing, latex gloves, and shoe covers.

Nasopharyngeal flocked swabs: performed with the patient sitting upright with the head in an upright position.

What is A Covid-19 NP Swab?

What is A Covid-19 NP Swab?

The subject needs to tilt his head back.

Nasopharyngeal swabs are not along the nostrils, but perpendicular to the face, entering from the nasal passages.

When collecting, do not enter violently when encountering resistance or the subject feels obvious pain.

When taking nasopharyngeal sampling, the operator can stand behind the subject and does not need to look directly at the nasal cavity.

In addition, there is basically no gag reflex, the tolerance is good, and the risk of exposure is relatively low.

After sampling, the individual tested may have a sneeze reflex, immediately use an elbow or a tissue.

A small number of subjects may have a little nosebleed after sampling, which can usually be stopped on their own.

When taking a nasopharyngeal swab, it can stay in the nasopharynx for a longer time in order to obtain a more adequate sample.

Studies have shown that the positive rate of nasal swab samples is higher than that of throat swab samples, that is, the efficiency of nasal swabs for virus swab detection is higher than that of throat swabs.

What can a nasopharyngeal swab detect?

Used for nasopharyngeal sampling for respiratory viruses such as influenza, swine flu, bird flu, and hand, foot and mouth.

Nasal Swab Test

A nasopharyngeal culture

The reasons for false negatives

1. Patient: The virus content may be too low. The nucleic acid swab detection reagent has certain requirements for the virus presence in the infected person. If the virus is too low, existing methods may not detect it.

The onset of new coronary pneumonia patients will go through a process from asymptomatic after infection, to mild symptoms, to severe symptoms.

2. Collection of specimens: false negatives cannot be completely avoided.

Many experts have concluded from practical work that the positive rate of sputum and bronchoalveolar lavage fluid samples collected from the lower respiratory tract is higher than that of oro-nasopharyngeal swabs from the upper respiratory tract; the positive rate of nasopharyngeal swab samples is higher than the Oropharyngeal swab.

Improper collection site, for example, when collecting oropharyngeal swabs, the depth of the collection is not enough;

Nasopharyngeal swabs are not enough deep into the nasal cavity, etc., and most of the collected cells may not contain viruses, which may cause false negatives.

3. Detection reagents: At present, the quality of the reagents on the market may vary.

4. In addition to the test reagents themselves, laboratory specifications will also have an important impact on the test results. Specimen transportation and storage conditions, standardized operations in clinical laboratories, result interpretation and quality control are all key factors to ensure the accuracy and reliability of test results.

Prevent false negatives

Incorrectly performed nasopharyngeal swabs may lead to a greater likelihood of patients receiving false-negative test results.

False-negative results are an important issue to address, as these results can cause patients who are positive for some diseases to unknowingly transmit highly contagious diseases, especially COVID-19, too many others.

Therefore, adequate training of testers on how to perform nasopharyngeal swab tests reliably is critical. Use high-quality detection reagents. learn more.

What Is Virus Transport Medium

What Is Virus Transport Medium

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The virus transport medium is novel and unfamiliar to many small partners, but it is of great significance for the detection of various viruses.

The new crown virus has tortured human beings enough.

In the face of a large number of COVID-19 patients, some places are still rising.

Therefore, as soon as there are new additions, many places will focus on the new crown nucleic acid detection.

The virus preservation solution plays a very important role.

Virus Transport Medium with Specimen collection swab

Virus Transport Medium with Specimen collection swab

At present, the nucleic acid detection of the new coronavirus is mainly the detection of viral nucleic acid.

Virus transmission medium is a cell preservation liquid, which protects the virus to be detected by immersing the flocked swab head with the virus sample into the transport tube.

It is mainly suitable for the new coronavirus, Collection, preservation and transportation of common virus samples such as the influenza virus.

To collect throat swabs, nasal swab or tissue samples from specific parts.

The stored samples: for subsequent nucleic acid detection or clinical experiments such as virus culture.

Since the virus is a parasitic organism, it cannot survive outside the body after sampling.

If it cannot be detected in time, it needs to be placed in a virus preservation solution for preservation. (Virus Transport Medium)

In order to protect the safety of the virus detection environment and the safety of the detection personnel, inactivated virus preservation solution is actually a better choice!

FLOCKED SWAB

FLOCKED SWAB

For different detection purposes, we need to use different virus preservation solutions for preservation.

The two widely used preservation solutions have their own characteristics.

In order to meet different detection requirements and different experimental conditions for virus detection, it is necessary to use different preservation solutions.

The inactivated virus preservation solution can inactivate the virus.

How to detect it after inactivation?

The purpose of our use of inactivated preservation solution is to lyse nucleic acids, release nucleic acids and then carry out nucleic acid detection by subsequent real-time fluorescent RT-PCR.

Doctors use inactivated virus transport media to determine whether the sample contains virus characteristic nucleic acid, that is, whether we carry the virus.

Inactivated virus transport medium:

A virus lysis type preservation solution improved by nucleic acid extraction lysis solution.

Effectively prevent the secondary infection of the operator, but it also contains inhibitors, which can protect the viral nucleic acid from being degraded.

This enables subsequent detection by NT-PCR.

Moreover, stored at room temperature for a relatively long time, which saves the cost of virus sample storage and transportation.

Non-inactivated virus transport medium:

A virus maintenance liquid type preservation solution improved on the basis of the transport medium.

It maintains the activity of the virus in vitro and the integrity of antigens and nucleic acids.

The protective viral protein shell makes it difficult to decompose and maintains the originality of the virus sample to a great extent.

For nucleic acid extraction and detection, the experimenters also use the transport medium for virus culture and isolation and maintain the activity of virus samples.

In addition to nucleic acid extraction and detection, the inspector also uses this preservation solution for virus culture, isolation and antigen detection.

Ethylene Oxide Covid Test

Ethylene Oxide Covid Test Sterile Swab

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EO sterilization refers to ethylene oxide sterilization.

Ethylene oxide (EO) is a highly efficient and broad-spectrum gaseous disinfectant.

It is by far the only most reliable and widely used sterilization method recognized worldwide.

The nasal sampling flocked swabs included in the COVID-19 test kits are sterilized by EO or gamma-ray sterilization.

Rest assured, the swab is safe to use. Including ethane is a gas use commonly used to sterilize different types of medical equipment, flocked swabs for test kits.

The time period for the entire process includes multiple heights and set-up phases, including post-swab removal of sterilized equipment to control ethane treatment.

Allows monitoring of residues in contact with humans (EO amount has been according to ISO 10939-7:2008) ).

Our GMP Factory Flocked Swab Ethylene Oxide Covid Test

Our GMP Factory Flocked Swab Ethylene Oxide Covid Test

Ethylene Oxide Covid Test Sterile flocked Swab Principle

What is the principle of ethylene oxide sterilization (EO sterilization)?

Ethylene oxide, also known as ethylene oxide, has the molecular formula C2H4O.

The boiling point is 10.4°C, it is soluble in water, and the explosion limit in air is 3% to 100% (volume).

Ethylene oxide is a highly volatile, explosive, flammable and toxic substance with ether smell when volatilized. It is a spectral sterilant.

Ethylene oxide can effectively kill various microorganisms, including bacterial propagules, spores, viruses and fungal spores, and is a broad-spectrum high-efficiency sterilant.

Ethylene oxide molecule can produce alkylation reaction with a carboxyl group, amino group, sulfhydryl hydrogen group and hydrogen group on gene proteins necessary for metabolism in bacterial cells.

Instead of the unstable hydrogen atoms on the above groups, form a hydroxyethyl group.

The rooting compound, because this compound destroys the necessary reactive groups in the important metabolic reactions of microorganisms, affects the action of bacterial enzymes, and causes the death of microorganisms.

Nasal swabs included in COVID-19 inspections are EO sterilized.

I heard that ethylene oxide sterilant is toxic and carcinogenic, but covid sterile swaps are all sterilized with ethylene oxide.

Is it safe for us to use a covid swab?

Is the risk of cancer caused by directly entering the respiratory tract greater?

The words “Clean and Sterile EO” on the product packaging of sterile flocked swabs. At this point there’s a crowd that’s saying “

Specimen Collection Swab Ethylene Oxide In Swabs

Specimen Collection Swab Ethylene Oxide In Swabs

It’s completely dry here.

There’s no result. But once you put it in a person’s nose, it’s wet. Once you inhale it, it’s going to kill us. It’s really killing people.”

While it’s safe to say that direct exposure to ethylene oxide is actually linked to cancer (here), that doesn’t suggest that swabs sterilized with ethylene oxide definitely cause cancer cells.

Ethylene oxide is a valuable disinfecting gas because it is very good at inactivating bacteria.

It is used in factories in a very tightly controlled method to ensure that people working in manufacturing plants are not put at risk.

It is a common chemical used to sterilize clinical tools and leave a minimal amount of product behind.

In conclusion, EO is a gas commonly used to sterilize clinical equipment such as COVID-19 nasal swab tests.

Ethylene oxide (ethylene oxide) is a highly efficient and broad-spectrum gaseous disinfectant.

It is by far the only most reliable and widely used sterilization method recognized worldwide.

Although EO is carcinogenic, the use of this gas is safely regulated and has actually been used for decades.

Sterilization procedures are regulated to ensure minimal EO residues on medical tools.

China Specimen Collection Swab Factory

China Specimen Collection Swab Factory

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Flocked swab

Cell Medical Company specializes in producing all kinds of flocking swabs, pharyngeal swabs, oral swabs, nasal swabs and microbial sampling swabs

Learn more

Virus sampling tube

CellMedical sampling tubes are sold worldwide, 10 mixed with 1, 5 mixed with 1, and single suit virus sampling tubes are sold in stock

Learn more

Virus transport medium

In addition to virus transport media, we also produce cell preservation solution, DNA extraction kit, fecal sampling tube and other products. Welcome to consult.

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Cellmedical is a well-known factory producing flocking swabs

A high-capacity supplier with a daily production capacity of nearly 10 million flocked swabs and 500000 sets of vtm kits

How to Use Specimen Collection Kit

How to Use Specimen Collection Kit

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What is a Specimen Collection Kit?

Sample collection kits provide all the components needed to secure samples and send them to laboratories for diagnostic. Environmental sampling and research purposes. Timely collection and processing of samples are critical to ensure accurate results and prevent analytical errors.

Specimen Collection Kit Contains:

  • Individually packaged sterile specimen collection flocked swab;
  • 10ml virus sampling tube, containing 3ml Viral Transport Media;
  • Sterilization packaging, Individual in Paper peeled pouch;

The novel coronavirus (2019-nCoV) is an RNA virus. Improper storage or transportation of samples after collection may result in the degradation of part of the nucleic acid and affect the test results;

In addition, samples that have not been inactivated virus can easily lead to indirect infection of operators.

The covid-19 sampling kit independently developed by Cell medical can not only prevent the degradation of viral RNA but also inactivate the virus.

While ensuring the test results, it can reduce the risk of biological infection during the inspection process.

Product description

Viral Transport Medium China

Viral Transport Medium Chin, VTM kits For COVID-19. Cell medical not only produces sampling swabs but also virus sampling tubes.

Analyzing material effectively starts with collecting samples with the right tools, whether it’s collecting samples from the body to aid in medical diagnosis, identifying potentially harmful pathogens from the environment.

Or collecting samples from crime scenes to aid in investigations.

However, it is also important to ensure that contaminants do not come into contact with the sample as it travels to the laboratory. Given the plethora of options available for each of these missions, choosing the right collection and transport vehicle can be overwhelming. This is where a specimen collection kit can prove invaluable.

Features:

1. Safety: Sampling and virus inactivation are carried out simultaneously, which greatly reduces the operator’s infection risk;
2. Stability: keep the sample stable, avoid nucleic acid degradation, and ensure the accuracy of the test results;
3. High efficiency: Inactivated virus samples can be detected in conventional PCR laboratories, and the collection tube can be adapted to the Tianlong automated nucleic acid extraction system, which improves the detection efficiency of samples.

Instructions:

What is the Specimen Collection Kit?

As pointed out over, example collection packages have shown very usefully in securing examples for analysis in a large range of clinical, environmental and research study applications.

Nasopharyngeal samples collected by swabbing the upper retronasal vocal cords can supply analysis confirmation for a series of viral as well as bacterial infections, consisting of influenza, COVID-19, enterovirus D68, as well as other respiratory system conditions.
Fecal samples can be gathered by anal or fecal swabs as well as can aid clinicians detect a series of intestinal microbial infections.
A vaginal swab example can help determine the visibility of Group B Streptococcus or Streptococcus agalactiae, a type of microorganisms found in the digestive system and also birth canals of a quarter of pregnant ladies, to name a few conditions.
Food sampling is not just important for recognizing the potential presence of foodborne pathogens but is a crucial step in maintaining conformity with FDA food security requirements.

How to choose the right specimen collection kit?

It is necessary to discover a sampling collection set created for your particular end-use. This consists of using the flocked swab that best matches your sampling collection needs. As an example, foam swabs might use elution characteristics best matched for environmental and also food sampling, while polyester or crowded swabs may supply a combination of collection attributes and also person comfort far better fit for medical usage.

Nonetheless, it is not constantly necessary to utilize a sample collection package created for usage with the example cpu’s very own brand name of the fluid transfer system. Validation examinations can aid clinicians, food mill and also other samplers, and also labs recognize precise and also affordable sample collection kits. Verifying shipping systems from several suppliers has come to be a common practice in research laboratories around the globe, not just to ensure sustainable supply, but likewise to compare item top quality and expense.

What to do before swab test

What to do before swab test

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What to do before the swab test？

Why implement full coverage of DNA swab testing?

What should be paid attention to in DNA testing?

The latest statistics on the COVID-19  released by Johns Hopkins University in the United States on the 9th show that the cumulative number of confirmed cases in the United States has exceeded 60 million.

Nucleic acid detection is an effective method for precise prevention and control.

After the COVID infects the human body, it will multiply in the respiratory system.

Using a nasopharyngeal swab to detect sputum can determine whether the human body is infected with the virus, and can quickly and accurately “find out” the virus.

The recent spread of the epidemic has brought new pressure to epidemic prevention and control around the world. There are even reports of a country’s leader being positive for the new crown. Mexican president tests positive for coronavirus. The President of Paraguay has tested positive for the new crown. Poland: President tests positive for coronavirus. Brazil’s president tests positive for coronavirus. etc.

On the basis of continuing to perform nucleic acid testing on key groups of people, close contacts, etc., to identify the infection chain as soon as possible, block the transmission route, control the spread of the epidemic, and implement large-scale full nucleic acid testing, we must achieve early detection, early reporting, Early isolation, early treatment, active search for potential new coronavirus infections, and targeted prevention and control measures are also adopted to protect the health of the masses, ensure the rational flow of the population, and maintain the stable development of social and economic life order. It is very important. significance.

What methods are available for COVID swab testing?

Nucleic acid detection generally adopts the nasopharyngeal swab detection method, including nasopharyngeal swab detection and oropharyngeal swab detection.

At present, most hospitals and institutions in our city use oropharyngeal swabs.

This method is the least painful and more convenient to collect samples.

Is it painful to take a throat swab?

A throat swab is a method of collecting a specimen from the throat area, it is painless, mild nausea or sore throat method, which can be relieved or disappear quickly after collection.

Are DNA tests dangerous to humans?

There is no harm to the human body, only when the throat swab is collected, a slight foreign body sensation will be felt when the cotton swab enters the throat.

What should I pay attention to before and after the inspection?

Before detection

Before the nucleic acid test, it is best not to eat for 2 hours, otherwise, it will cause vomiting.
Do not drink water, smoke, drink, or chew gum 30 minutes before sampling.

Before the examination, reduce the number of swallowing movements, and do not do throat-clearing movements, such as expectoration and spitting.

For example: before the nasopharyngeal swab collection, the subject should provide the collector with the relevant past medical history or related matters.

Such as history of nasal surgery, nasal septum, blood disease, throat disease, or taking anticoagulant drugs.

Be sure to wear a mask before going to the test, take out the mask before the test, and put it on immediately after the test. You can prepare a spare mask, which can be replaced at any time after pollution.

Checking

When collecting oropharyngeal swabs, the subject should tilt his head back, relax as much as possible, take a deep breath, and open his mouth to make an “ah” sound, which will help reveal the throat, but symptoms such as irritating dry cough, nausea and vomiting may occur during this process.

Nasopharyngeal swab During the process of nasopharyngeal swab, symptoms such as swelling, itching, and sneezing may occur, which can be covered with a tissue or elbow.

After detection

Leave the collection site immediately after collection to avoid spitting and vomiting near the collection site.

You must pay attention to hand hygiene before and after the nucleic acid test.

You can wipe your hands with your hands, or you can use hand sanitiser, disposable alcohol, and disinfectant cotton pads.

 

Important reminder:

●Be careful to wear a mask, do not expose your nose and nose, do not take it off at will, or pull the mask to your chin.
●There should be an orderly queue, keep a distance of 1 meter, do not get together, do not gather.
●When waiting in line for a long time, pay attention to sun protection, sun protection, scientific hydration, and a reasonable diet.
● Try to avoid taking public transportation to the nucleic acid test sampling site.

The current situation of epidemic prevention and control is very complicated.
Every day, take care to protect your body.
Wear a mask and follow the epidemic prevention regulations.
Protect yourself and protect others at the same time.
New coronavirus pneumonia cases.
Please accept the general guidelines for prevention and control.
Daily Travel Prevention Control Guidelines.
Take the bus, take the subway.
To minimise contact, payment can be made using a transport card or a mobile app.
Avoid touching public facilities such as seats, armrests, car doors, and armrests with your hands as little as possible. If you do, do not touch your mouth, eyes, and nose directly with your hands, and disinfect your hands in time to avoid contact infection.

Hospitals and other places, after returning home, you should disinfect your outerwear.

Flocked swab evaluation

Flocked Swab Evaluation: Virus Sampling Swab Material and Performance

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Flocked Swab Evaluation: Virus Sampling Swab Material and Performance

Flocked swabs are the main test samples for PCR.

In the selection of raw materials, flocking glue plays a key role in the collection and release efficiency of swabs.

Whether to use high-quality water-based flocking glue is the main factor affecting the water absorption and hydrophilicity of fluff.

The experiment is to compare the sample collection effects of swabs flocked with different glues.

■ Preparation materials: Flocked swab, control group flocking swab, beaker, dye, water, balance, scale, vernier calliper.

1. The purpose of the experiment

The quality of incoming nasal swabs is guaranteed through the appearance inspection, size inspection and saturated liquid absorption inspection of the anterior nasal swab.

Flocked nasal swab

Flocked nasal swab

2 Sampling guidelines for flocked swab samples

2.1 Appearance inspection, the quality department conducts sampling according to scientific methods.

The quality personnel shall check whether the swab packaging bag is complete.

2.2 Visual inspection

1. Visually inspect the appearance of the swab to see that there is no lack of glue, no cracks, no deformation, no black spots and heterochromatic spots; (CR)

2. Visual inspection of the head: no damage, false soldering, missing soldering, black spots, looseness, dirt, scorch.

Visual inspection of the material: Compared with the swab sample, whether there is a difference in the material and thickness of the cotton tip of the swab.

2.3 Size check

The inspector carries out dimensional inspection according to the specifications of the material coding system.

2.4 Saturated suction volume

The inspector weighed the flocking cotton swab and recorded it as ml. Transfer it to a qualified preservation solution bottle 15 times. Weigh the swab again and record it as m2 and 0.11g ≤ m2-m1 ≤ 0.18g.

Remarks:

1. Definition of defect level: (MA) is a general defect mark; (MI) is a minor defect mark; (CR) is a serious defect mark.