COVID-19 Swab Test: What you should know

COVID-19 Swab Test: What You Should Know

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An abrupt COVID-19 has brought flocking swabs, nasopharyngeal swabs, oropharyngeal swabs, nucleic acids, antigens, PCR and also other extremely professional terms right into the public eye. Today, CellMedical will certainly offer you preferred scientific research: those aspects of Coronavirus (COVID-19) screening.

What is a flocking swab, nasopharyngeal swab, or oropharyngeal swab?

When nations are executing a new round of nucleic acid screening, a report is spreading out in circles. The basic concept is “the cotton bud used for sampling have reagents on them, which are hazardous”. Some netizens also left a message to the CellMedical firm backstage, saying that after seeing the pertinent reports, the elderly at home shared that they did not want to take part in nucleic acid testing, and also really hoped that the younger generation would additionally attempt not to undertake nucleic acid testing as well as antigen testing.

“The covid test swab is not the same as the cotton swabs used in daily life, but it does not contain reagents, nor is it toxic”. ( Click here to learn more )

What is a flocked swab and why choose flocked oropharyngeal and nasopharyngeal swabs?

A flocked swab is used because it is more suitable for sampling and testing. The flocking swab(learn more) is made of nylon fiber flocking technology, and the front end is coated with nylon short fibers fixed in a vertical manner, so that there is no absorption hole in the entire collection area of ​​the collection swab. In this way, the collected sample is not dispersed and retained in the fiber, which facilitates faster and more efficient elution. Relevant data show that CellMedical flocked swabs can elute more than 95% of the sample collection volume; traditional cotton swabs, especially those made of absorbent cotton, cannot completely collect and elute samples.

Enlarged view of flocked swab

Enlarged view of flocked swab

Nasopharyngeal swabs – which require a swab inserted into the nose to collect samples from the back of the nose and throat – are the gold standard for collecting samples for diagnosis. But the process is technically difficult, often uncomfortable for patients, and requires personal protective equipment that may be in short supply.

Oropharyngeal swab – the oropharyngeal swab is a method of collecting oropharyngeal specimens by entering the sampling swab through the mouth – compared with a nasopharyngeal swab, it is less difficult, more acceptable to the public, and more universal. 

What exactly is PCR nucleic acid detection?

PCR (Polymerase Domino Effect, polymerase chain reaction) innovation is a wonderful creation, without the creation of PCR modern technology, there would be no modern-day molecular biology. Nucleic acid detection modern technology has likewise entirely transformed several techniques such as genetics, medication, and also forensics, allowing human beings to accomplish significant steps such as hereditary testing, viral infection identification, and also genetic testing.

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Basically, PCR nucleic acid detection: To significantly magnify nucleic acid till it can be identified by equipment detection.  Yet if you increase the size of the nucleic acid, 1 ends up being 2, 2 comes to be 4, and also 4 ends up being 8. Consequently, PCR innovation is a method of amplifying nucleic acid.

After the covid-19 contaminates the human body, it will initially increase in the respiratory system. So it can be determined whether the body is infected by finding the viral nucleic acid in sputum and nasopharyngeal swabs. After a duration of infection, typically 7-10 days later, the body will certainly create specific antibodies versus the virus. IgM antibodies show up initially, adhered to by IgG antibodies. So immunological discovery approaches can identify these specific antibodies to identify whether the human body is carrying the virus.

Will the results from different nucleic acid testing institutions be consistent?

PCR nucleic acid detection has a strict standard procedure. It is the same SOP (Standard Operation Procedure). At the exact same time, all nucleic acid labs, regardless of dimension, must adhere to the same technological demands, and also the design and building of laboratories additionally have uniform specifications. Also, research laboratory screening staff have to go through standard technical training and also acquire a nationally identified task certification before they can work. It resembles KFC’s fried chicken all use the exact same dish. Whether it’s a fast window in the station, a sizable and comfortable dine-in in the town hall, or home delivery, you can constantly eat deep-fried chicken with the exact same preference, do not fret will certainly strike rumbling.

Therefore, no matter which institution we conduct nucleic acid testing, the outcomes need to coincide.

The collection of samplings from different components has different clinical importance. Along with the popular nasal swabs and throat swabs, sputum, blood as well as rectal swabs；

Nasal and throat swabs – upper respiratory tract specimens

Sputum – Lower Respiratory Tract Specimens ( Saliva Collection Kits )

Anal swab – digestive tract specimen

Blood – Antibody Test Specimen

What is the difference between nucleic acid testing and antibody testing?

The distinction between both is a positive nucleic acid shows the presence of viral nucleic acid in the sampling. Which suggests that the infected individual might be infectious. A favourable IgM antibody shows that the patient remains at the beginning of infection. IgG antibodies indicated that the patient had SARS-CoV-2. However, we were unable to determine whether it was transmissible. Compared with antibody detection, PCR nucleic acid discovery is much more sensitive and is additionally the “gold criterion” for laboratory detection.

Therefore, in recent cases, doctors discussed that the patient has symptoms of infection.

What factors may affect COVID-19 nucleic acid test results?

1. Viral load: In summary, when the viral lots are low. False negatives may occur.

2. The coronavirus may alter, which may further impact the accuracy of the test in the future.

3. Testing method: In the recently reported genuine tasting scene, several participants reported that the swab only revolved left and right in the mouth, and it really felt like it was only touching saliva.

However, did not reach the lingual and palatal arc, and the respondents did not have nausea and also reflexes. Sex-related security action, this type of tasting has a high possibility of not gathering exfoliated cells of the respiratory tract, so it is vulnerable to missed discovery, leading to false unfavourable results.

CellMedical VTM Kits Disposable Virus Sampling Tube Manufacturers

CellMedical VTM Kits Disposable Virus Sampling Tube Manufacturers

Cell medical (Dongguan) Co., Ltd., established in 2009, a swabs design/swabs manufacturer, has many years of experience in medical application moulding and flocking treatment heads and swabs. Our flocking swabs are famous for their stable and reliable performance and excellent absorption and elution ability.

We produce flocked swabs, VTM kits, and virus transport medium, with multiple automatic production lines(Including automatic VTM tube production line, OEM VTM Tube, Flocked Swab Production Line, etc).

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.

Combined Throat And Nose Swab

Combined Throat And Nose Swab

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What is the difference between a nasal (Nose) swab and a throat swab for nucleic acid testing

The sampling method and location are different. The accuracy rates of the nucleic acid test ( PCR Test ) nasal swabs and throat swabs are usually similar, and the main difference lies in the sampling method and sampling site. For nasal swabs, nasopharyngeal swabs (flocking swabs) are mainly used to test the secretions from the inside of the nasal cavity and the surface of the nasal mucosa through the nasal cavity;

Throat swabs: Health care workers collect samples in the mouth with oropharyngeal swabs. Health care workers take throat samples for testing to determine whether a patient has the new coronavirus.

Are both throat swabs and nasal(Nose) swabs required?

Let’s talk about throat swabs first.
The “oral sampling” and “nasal sampling” mentioned above are actually test methods in which medical staff use medical swabs to collect samples from the pharynx in nucleic acid testing (PCR).

COVID-19: Will The Pandemic End in 2022?

It is very important to continue swab testing while the pandemic is still ongoing

Whether entering from the nasal cavity or the mouth, the specimens we need to collect are pharyngeal secretions, including sputum. Compared with the oral route, nasal sampling can provide better safety protection for the sampling person. Because oral sampling requires subjects to open their mouths wide, this increases the risk of virus transmission by droplets. However, if it is collected through the nasal cavity, the environment is relatively stable, and the medical staff who operate it will be safer.

What is the difference between a throat swab and a nasopharyngeal swab, which is more accurate?

The main difference between nasal swabs and throat swabs lies in the location and material of the specimens, which are usually as accurate. The throat swab is in the pharynx, and the nasal swab needs to go into the nasal cavity, not the external nasal cavity. It needs to use a longer swab and slowly rotate it to the deep part of the nasal cavity, so the parts of the material are different. Nasal swabs are special, and the material is relatively soft, which is convenient for reaching the deep nasal cavity through the nasal cavity. The process of taking it may take longer than that of throat swabs.

Compared with nasopharyngeal swabs, oropharyngeal swab sampling is sometimes difficult to meet the normative sampling requirements due to irritating reactions, and the actions of eating, drinking and swallowing will reduce the oropharyngeal to a certain extent. The virus enrichment of 2000 may affect the positive detection rate of oropharyngeal swabs.

Which is better, nasal(Nose) swab or throat swab?

No matter which one is adopted, the key lies in the depth of the collection, whether the collection is in place and the length of contact time with the deep mucosa. 

 From the personal experience of the testing population, throat swabs will be less irritating and uncomfortable than nasal swabs.

Flocked Sterile Swabs

Sterile Flocked Swab

Oropharyngeal swab

　　• The operation is relatively simple and less irritating, suitable for large-scale screening.

　　• The sampling staff will guide the subject to open the mouth, and then use a sterile long cotton swab to gently scrape the subject’s throat to collect secretions from both palatine arches, pharynx, and tonsils.

Nasopharyngeal swab

　　• The technical requirements are high, the human body does not feel very comfortable, and the accuracy is higher than that of oropharyngeal swabs. For key groups such as isolation points.

　　• The sampling staff will insert a long sterile cotton swab into the nostril of the subject, and reach the mucous membrane deep in the nasopharyngeal cavity, stay for a few seconds to soak the secretion, and then take it out.

Who is not suitable for nasal swab

What is A Covid-19 NP Swab?

What is A Covid-19 NP Swab?

When collecting nasal swab specimens, the flocked swab ( learn more ) will enter the nasal cavity.  

f the medical staff operates in a standardized manner, it will reduce the irritation to the mucous membranes.

But because we can’t see the sampling position of the pharynx.

It mainly relies on the hands of medical staff to feel the resistance, so the technical requirements of the operator are very high, and the tools used are also more complicated.
The improper operation will cause certain irritation to the nasal mucosa, so it is not recommended for patients with sinusitis and allergic rhinitis to do nasal swabs to avoid damage to the nasal cavity.

How to overcome the discomfort of throat swab

When collecting throat swab specimens, the oropharyngeal flocked swab will cause certain irritation to the pharynx. For some people with the sensitive pharynx, nausea and vomiting may occur.

Recommended to relax before collecting specimens.

Don’t get too nervous. If you feel discomfort in your throat after collection, you need to eat less spicy, irritating and greasy food, drink more water, eat more vegetables and fruits, and arrange rest appropriately. Generally speaking, it does not take long to return to normal.

Experts said that the study found that the nucleic acid-positive duration of feces or anal swabs of some infected people is longer than that of the upper respiratory tract. Increasing anal swab sampling can improve the detection rate and reduce missed diagnosis; but anal swab sampling is not convenient enough, and currently only for isolation. Points and other key groups to use.

 

Flocked Swab With Vtm Kits Leading China Manufacturer

Flocked Swab With Vtm Kits Leading China Manufacturer

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What are flocked swabs used for?

Flocked swabs are widely used in Covid Test bacteriological sample processing, virological cell culture, DFA testing, rapid and direct testing, enzyme immunoassay testing, polymerase chain reaction and molecular diagnostic-based tests, and forensic identification. Both are ideal.

For throat sampling of respiratory viruses such as influenza, swine flu, bird flu, hand, foot and mouth.

Vtm Kits are used for the collection, transportation and storage of influenza, avian influenza, coronavirus and other virus samples for subsequent extraction and PCR amplification.

After samplers collect virus samples, they usually do not conduct PCR testing at the sample collection site in time.
So the collected virus flocking swab samples need to be transported. The virus itself will rapidly decompose in vitro, affecting subsequent detection. During transport, we need to add a virus preservation solution (virus transport medium).
For different detection purposes, we need to use different virus preservation solutions.
At present, it mainly includes inactivated type and non-inactivated type. In order to meet different detection requirements and different laboratory conditions for virus detection, it is very necessary to use different preservation solutions.
Flocked Sterile Swabs

Sterile Flocked Nasopharyngeal Swab, 100% nylon flocked swab that provides exceptional absorption quality.

The principle of flocking swab precipitation.

1. Through the directional friction effect of the fiber layer of the flocked swab, the laboratory operator can complete the cell sample.

The unique structure of the top of this swab can greatly increase the number of samples collected

2. Flocked Swab is ideal for collecting large amounts of cells & rapid elution of the specimens instantly released into the transport medium.

More than 95% sample release rate. Very easy to elute.

3. The capillary movement between the nylon fibres at the top of the flocking swab forms a strong hydraulic pressure for absorbing liquid or cell-like samples.

Why flocked swabs are more beneficial for micro DNA collection.

1. The top of the traditional cotton swab, may even lead to false-negative results of the test.

2. The top of the flocking swab has a unique structure, which can almost completely extract and separate trace DNA, so the flocking swab has more obvious advantages in collecting trace DNA.

Made of non-inhibitory DNA amplification materials. It has been verified that it can be directly amplified by PCR, eliminating the need for extraction steps.

About viral transport media

At present, it mainly includes two types: inactivated and non-inactivated.

Flocked Swab With Vtm Kits Leading China Manufacturer

Flocked Swab With Vtm Kits Leading China Manufacturer

Inactivated preservation solution:

It can lyse and inactivate the virus in the sample so that the virus loses its infectious activity.

It can effectively prevent the secondary infection of operators.

But it also contains inhibitors, which can protect the viral nucleic acid from degradation.

Therefore, the experimenter can perform follow-up detection by NT-PCR.

Stored at room temperature for a long time, saving the storage and transportation costs of virus samples.

Non-inactivated preservation solution:

The non-inactivated preservation solution of the present invention can maintain the in vitro activity of the virus and the integrity of the antigen and nucleic acid, protect the viral protein shell, and maintain the originality of the virus sample to a large extent.

Not only for nucleic acid extraction and detection (PCR test) but also for virus culture and isolation.

　　The CellMedical virus sampling tube has a thickened and leak-proof design to ensure that the sample does not leak during transportation. It is a virus transport medium (VTM KITS) that complies with WHO regulations and biosafety regulations.

Viral Transport Medium Tube Suppliers

Viral Transport Medium Tube Suppliers

CellMedical produces and sells medical swabs, sampling swabs, sterile swabs, flocking swabs, sponge swabs, nasal swabs, throat swabs, nasopharyngeal swabs, gynecological swabs, genetic swabs, forensic swabs Swabs, oral swabs, nucleic acid swabs, new crown swabs, antigen swabs, anterior nasal swabs, sterilized swabs, collection swabs, flocking cotton swabs, sampling cotton swabs, etc.

Cell medical (Dongguan) Co., Ltd. is a Class II medical device manufacturer integrating R&D, production, sales and service.

The company is committed to providing cells, Virus, Microorganism Collection & Storage & Shipping Solutions.

Cell medical (Dongguan) Co., Ltd. was established in 2009, the company is located in Chang’an, Dongguan.

We mainly produce flocked sampling swabs, sponge sampling swabs, preservation transport media, virus sampling tubes and saliva collectors.

Cell medical (Dongguan) Co., Ltd China Vtm Swab Supplier And Manufacturers

VTM Kit, Viral Transport Media manufacturers, suppliers & exporters in china. Vtm SWAB collection kit compatible with its PCR test

To provide cell, virus, microbial sample collection, storage and transportation solutions for life sciences. Forensic identification, CDC, in vitro diagnostics and medical testing.

After more than 10 years of unremitting efforts and the pursuit of excellence in quality,

Today, CellMedical has become a Class II medical device manufacturer integrating R&D, production, sales and service.

Medical care means high technology and rigour. We always adhere to the concept of “survive by quality and develop by innovation”.

The company has an 8,000-square-meter workshop, a 3,500-square-meter GMP workshop and a 600-square-meter laboratory.

The sterile sampling swabs we produce have a high collection volume and release volume, which greatly enhances the accuracy of the inspection;

Well received by domestic and foreign customers. The company has passed ISO 13485 quality system, and flocking and sponge swabs have product registration certificates, CE and FDA certifications.

ABOUT VTM kits and swabs manufacturer

ABOUT VTM kits and swabs manufacturer

What is viral transport medium ?

What is viral transport medium ?

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Viral transport medium is a protective liquid medium added to the virus sampling tube to protect the samples after nasopharyngeal swab sampling and is usually called virus preservation solution in China.

Usually, in nucleic acid testing (PCR swab test), we cannot perform nucleic acid PCR directly at the sample collection site.

We need to add virus preservation solution (VTM) to the samples collected by swab for transfer check.

Pooled Sample Test Viral Transport Media Kits Manufacturer

Viral Transport Media Kits Manufacturer

What is a virus?

Viruses are microorganisms whose structure is very simple.

There is no way to complete the process of self-replication.

They need the help of host cells and the nutrition of the host to complete virus replication.

The virus can infect humans as well as many other animals.

Influenza viruses such as common infectious diseases are usually RNA viruses.

There are many common viruses that cause human infection, which can cause respiratory diseases, such as cold virus, influenza virus, HIV and influenza A virus.

Since it has no cellular structure of its own, the virus itself cannot replicate.

But invades the gene into the host cell and replicates the new virus with the help of the latter’s replication system.

In conclusion, viruses are diverse and can cause damage to multiple parts of the body. “

After the virus sample is collected, in order to maintain the activity of the virus sample and prolong the survival time of the virus in the sample, the sampling swab ( flocking swab ) will be put into the preservation solution ( viral transport media ) for preservation and transportation.

What is the viral transport medium used for?

pcr test

PCR test

The inactivated viral transport medium can perform protein denaturation on fresh clinical virus specimens to inactivate the virus. Prevent secondary infection and ensure the safety of transportation and testing personnel. The inactivated samples can be used with a variety of virus extraction kits.

The nucleic acid extraction instrument can quickly extract nucleic acids.

At the same time, with the respiratory pathogen PCR detection kit (VTM Kits) to achieve rapid detection. The specificity and sensitivity are not affected.

Virus preservation solution has many functions:

1. The operation is simple, and the liquid contains ingredients that can denature proteins, thereby inactivating the virus;

2. Contains inhibitors to protect the stability of viral nucleic acid to a greater extent and greatly improve the nucleic acid extraction rate;

3. Stored at room temperature for 12 months before sampling.

The airtightness is good, which is convenient for storage and transportation and saves transportation costs.

Cell medical (Dongguan) Co., Ltd.

Viral transport media include inactivated and non-inactivated viral transport media.

Contains Hank‘s Liquid, Potassium Chloride, Magnesium Chloride, Calcium Chloride, BSA, etc. The combination of various antibiotics has antibacterial and antifungal effects.  Bovine serum albumin (BSA), as a protein stabilizer, can form a protective film on the protein shell of the virus. Making it difficult to decompose and ensuring the integrity of the virus; Hank’s buffer The neutral environment constructed by the agent helps to increase the survival time and infection stability of the virus.

What is viral transport medium?

Anterior Nasal Swab VS Nasopharyngeal Swab

Nasopharyngeal Swab

Inactivated and non-inactivated virus preservation solutions: usually used for the collection and transportation of clinical influenza, avian influenza, hand, foot and mouth virus, measles and other virus specimens, as well as specimens such as mycoplasma, ureaplasma, chlamydia, etc.

1. For monitoring and sampling of infectious pathogenic microorganisms by disease control departments and clinical departments.
It is suitable for a sampling influenza virus (common influenza, highly pathogenic avian influenza, H1N1 influenza virus, etc.), hand, foot and mouth virus and other types of viruses.  
2. To transport nasopharyngeal flocked swab specimens or tissue specimens from specific parts from the sampling site to the testing laboratory for PCR extraction and detection.
3. Preserve nasopharyngeal swab samples or tissue samples from specific parts for necessary cell culture.
Pooled Sample Test Viral Transport Media Kits Manufacturer

Pooled Sample Test Viral Transport Media Kits Manufacturer

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The epidemic is an order, prevention and control are a responsibility, and life is more important than Mount Tai.

One-time use of  Viral Transport Medium accelerates production, Cell medical (Dongguan) Co., Ltd. has a daily production capacity of more than 1 million sets of Viral Transport Media kits.

One-time use Virus Sampling Tube, Accelerated Overtime Production, 10ml Viral Transport Media Tube, 20ml Viral Transport Media Tube, 30ml Viral Transport Media Tube.

20-in-1: Pooled Sample Test, originally originated from a single set of samples to 5-in-1, 10-in-1, and maybe 30-in-1, 40-in-1, and 50-in-1 in the future.

The purpose of collecting and mixing is to improve efficiency and quickly screen positive patient samples.

"<yoastmark

How strong is the detection ability of 10 people’s sample nucleic acid (PCR test) mixed together?

The new wave of the epidemic has affected the hearts of people all over the world. Many people are cheering on the Internet to overcome the epidemic. However, in the recent period, the outbreak of asymptomatic patients and local confirmed patients has not yet reached an inflection point. cases increased.

Why do 10-in-1 Pooled Sample Test?

Mainly because of the following three advantages.

1. The speed of nucleic acid detection can be increased by 10 times.

Citizens line up in an orderly line for pcr swab testing

Citizens line up in an orderly line for PCR swab testing

In the past nucleic acid testing, each person took a test tube.

After the test, we put the sample into the test tube for preservation.

The samples of 10 people: Stored in a test tube.

If tens of thousands of people in the city do nucleic acid swabs alone.

Then, we need millions and tens of millions of collection tubes and a large number of medical personnel.

In this way, the speed of nucleic acid detection will be very slow. Unable to achieve the desired effect.

2. It can quickly identify the positive infected people in the crowd.

Now the infected people are all asymptomatic patients with fever and no cold. It is impossible to detect them by ordinary methods. Only through nucleic acid testing can the hidden dangers in the crowd be excluded.

If everyone is tested individually, the speed of nucleic acid testing will be particularly slow. Over time, people queuing for nucleic acid testing are likely to cause cross-infection.

Completing the test as soon as possible and excluding infected people from the crowd as soon as possible can also reduce the scope of infection, and the mixed detection method for each person can improve the speed and reduce the scope of infection.

If there is one positive in it, wouldn’t it cause cross-infection?

Even if the other nine were negative, they would definitely be implicated.

3. Can reduce the cost of nucleic acid testing.

Although in some places our nucleic acid tests are all free, and people do not need to pay a penny, that is because all these nucleic acid costs are paid for by our government.

Our government will uniformly purchase test reagents for nucleic acid detection, and then uniformly pay for some of the testing costs.

There are millions of people in a city, and the cost of these nucleic acid tests is a lot of money.

So what is the principle behind this 10-person sample being mixed together?

Nucleic acid detection using this mode is to deal with large-scale nucleic acid detection.

Each group of 10 people, after completing the test, put the flocked swab samples into a collection tube, and then centrally send them to the local laboratory for testing.

Medical Swab Test Kit specimen collection sterile nylon flocked swab

Medical Swab Test Kit specimen collection sterile nylon flocked swab

If these 10 people are all negative, then it proves that these 10 people are all safe and do not need separate isolation and separate testing.

If one of the 10 people is positive, the remaining 9 people will have special epidemic prevention personnel.

These 9 people will be sent to the isolation area for individual isolation, and then each person will be tested individually every day.

After 14 days of isolation, in In the past 14 days, the results of these 9 people are all negative, which can ensure safety and allow them to return to normal life.

Nucleic acid detection using this mode is to deal with large-scale nucleic acid detection.

Each group of 10 people, after completing the test, put the flocked swab samples into a collection tube, and then centrally send them to the local laboratory for testing.

Pooled Sample Test Viral Transport Media Kits Manufacturer

Viral Transport Media Kits Manufacturer

Viral Transport Media Kits Manufacturer

Cell medical (Dongguan) Co., Ltd.

Product name: Disposable virus sampling tube ( Viral Transport Media)

Model: CM-F005-30 (12ml)

Specification: 12mL/tube

Type: inactivated/non-extinguishing/sample release agent

Scope of application: nucleic acid sampling, for new coronavirus sampling, COVID-19, coronavirus sampling, nucleic acid sampling, collection, transportation and storage of virus samples, etc.

Contraindications: none

20 in 1 virus sampling tube Manufacturer: Cell medical (Dongguan) Co., Ltd.

Output: 200,000 sets per day

10 mixed 1 production capacity of 1 million sets per day

Throat swab production capacity: 10 million per day.

Flocked Swab Influenza

Flocked Swab Influenza | Comprehensive Flu Swab Test Guide

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Flu Flocked Swab Influenza

Influenza refers to the common cold, which is an acute respiratory infectious disease caused by the influenza virus.

It is highly contagious and mainly spreads through droplets, such as coughing and sneezing. Influenza generally occurs in winter and spring.

The current influenza detection method is the rapid influenza antigen detection method, which detects “flux A” and “flu B” antigens.

Laboratory staff collect samples through throat swabs.

In fact, in inspection work, it is important to know the quality of the specimen in order to obtain accurate and reliable results.

Throat swab specimens: Professionals can avoid many false-negative influenza tests caused by improper specimen sampling.

The precautions for flu throat swabs are basically the same as those for nucleic acid detection throat swabs. Because the same part is sampled.

There are two types of flu throat swabs: nasopharyngeal swabs and oropharyngeal swabs.

What precautions should I take when taking a throat swab test for flu?

1. Oropharyngeal swab The collection method of the oropharyngeal swab is to let the subject open his mouth, then use a long pharyngeal swab to wipe the patient’s pharynx, bilateral frontal arches and tonsils, and take out the local secretions. Into the catheter of the throat swab and sent to the laboratory for testing.

2. Nasopharyngeal swabs The collection method of nasopharyngeal swabs is to use sterilized throat swabs to penetrate deep into the nasal cavity of the subject and reach the nasopharynx, and extract secretions and nasopharynx by rotating or wiping.

Epithelial cells put a section with secretions and epithelial cells into a sterile container and then carry out pathogenic detection.

"<yoastmark

Flu swab material

Swab options for flu testing include flocked swabs, cotton-tipped swabs, rayon tipped swabs, and foam-tipped swabs.

Cotton tip swab:

The original swab tips were all cotton, mainly based on their cleaning power and water absorption. Cotton swabs are very inexpensive and readily available, and are widely used in medical wound management after sterilization with ethylene oxide or autoclaving, as well as in forensic crime scene forensics. In the absence of alternatives, cotton swabs can be used in almost a variety of scenarios.

However, cotton-tipped swabs also have some problems. Due to the low release rate of cotton, natural material for samples, and some of the natural fatty acids in it can damage microorganisms, they are less and less used for sample collection.

Rayon head swab:

Rayon—a synthetic fiber made from wood pulp. Although classified as synthetic fiber, it is essentially a natural material. Compared to cotton, rayon is produced during the process of removing substances that may damage the sample or react with the sample during transportation and handling , so it is generally used for sampling for diagnostic testing.

Polyester Fiber Tip Swabs:

The head material of the polyester fiber swab is made of polyester long fiber winding, which was first introduced into the field of medical testing by DuPont. Polyester fibres are proven for microbial collection, rapid diagnostics, and PCR testing.

Polyester swabs have a high release rate but are more expensive than cotton and rayon swabs.

Foam tip swab:

China Medical Nasal Foam Swab Factory And Manufacturers

China Medical Nasal Foam Swab Factory And Manufacturers

Swabs made from medical-grade polyurethane are an excellent material for diagnostics, especially cell sampling. The swab tip of this swab is usually manufactured as a sheet with a surface hole count of 100ppi (holes per inch).

This material has good absorption of hydrophilic substances and poor absorption of hydrophobic substances. Used in some scenarios that require resistance to chemical corrosion. Also used for DNA and microbial sampling.

Flocked Swabs:

Flocking technology was first developed for cosmetic and industrial production. (Learn more)

After the flocking process was introduced into swab production. It replaced the traditional swab head, and the swab head was brought to a new level.

vtm swab

Due to the flocking process and the multi-branched polyester fibre material used, the flocked swabs have a very high absorption and release rate and are proven to be equally efficient for molecular sampling and absorption. Designated by some institutions for nucleic acid sampling as well as some research areas for genomic analysis.

The evolution of swabs is not limited to changes in materials. New demands in the fields of nursing, testing, and scientific research make swabs continue to evolve in multiple dimensions. The swab also not only acts as an applicator, but also acts as some transport medium.

Precautions include the following:

① Do not drink water before the throat swab test, at least 30 minutes in advance, because drinking water before the test will dilute the virus attached to the pharynx, especially drinking hot water will inhibit the activity of the virus.

In order to improve the accuracy of throat swab nucleic acid detection, do not drink water 15 to 30 minutes before the test to ensure that the throat swab has high accuracy.

②. For patients with good throat exposure, it is not recommended to take too long “ah~” sounds to reduce the risk of occupational exposure to the sampler.

③ To prevent vomiting, do not eat within two hours before the throat swab test.

④. Do not smoke, drink, or chew gum within half an hour before the throat swab test.

During the throat flocked swab sampling, the patient may have clinical symptoms such as nausea or nasopharyngeal discomfort, but the symptoms can subside quickly, so the patient should not be nervous and cooperate actively during the examination. At the same time, the subjects should not smoke, drink, or chew gum within half an hour before the sample collection.

If it is because of the throat swab the child, the parents must soothe the child’s emotions, communicate with the child patiently, and try not to move the child’s head as much as possible.

Deep Nasal Swab Virus Respiratory Kit

Deep Nasal Swab Virus Respiratory Kit

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As of April 30, local time, the number of new coronavirus patients in the United States has reached 81.2 million, and the number of deaths due to new coronavirus infection has exceeded 992,000.

As the government ramps up testing for Covid-19, many of us ordinary people are now being tested for Covid-19.

What is Deep Nasal Swab?

Deep Nasal Swab ( nasopharyngeal swab ) is actually a relatively long collection swab, similar to a relatively long sterile swab.

Its main function is to take nasopharyngeal secretions for bacterial culture and drug sensitivity tests.

The source of infection in the nasopharynx and the microorganisms in the nasopharynx were selected and identified by bacterial culture and drug sensitivity test.

Then a drug susceptibility test can be done to determine which drugs are sensitive so that sensitive drugs can be selected for treatment.

So that a better curative effect can be achieved, so the nasopharyngeal swab is actually a flocking swab for collecting nasopharyngeal samples.

China Sterile Flocked Nasopharyngeal Swab GMP Factory and Manufacturers.

China Sterile Flocked Nasopharyngeal Swab GMP Factory and Manufacturers.

Why deep nasal swab for covid?

The Deep Nasal Swab test: to collect cells deep in the nasal cavity because the nostrils by themselves do not provide a sufficiently accurate sample.

The collected fluid samples are sent to a laboratory for PCR testing (polymerase chain reaction), a standard scientific procedure that involves using samples provided by patients to build models of their DNA.

In this system, technicians can look for evidence of the genetic material (RNA) from the new coronavirus, which is wrapped in the patient’s own DNA if they are infected with the virus.

Both Public Health England and the US Centers for Disease Control and Prevention (CDC) prefer to use Deep Nasal Swab because it is so accurate.

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Unfortunately, for suspected Covid-19 patients, it can be uncomfortable.

During the operation, the medical staff is gentle and skilled, so there will be no pain.

What is the correct depth and length of nasopharyngeal swab collection?

See the length of the nasal swab? See how deep it goes into your nostrils?

The length of the nasal swab is normally about 15cm, and it should enter about 2/3 of the time when doing the collection.

How Accurate Is The Nasal Swab

The nasopharyngeal swabbing is generally the preferred method of specimen collection for COVID-19 testing.

About the distance from the tip of the nose to the earlobe, insert a thin cotton swab into the nostril, from the lower nasal passage to the posterior wall of the nasopharynx, and then turn the front to take a sample. The swab will have a significantly insufficient depth of entry. So the posture must be correct.

When the throat swab enters in the direction of the earlobe if it encounters resistance, it needs to adjust the direction, rotates it slightly, and cannot forcefully enter it.

Otherwise, damaged. Until the bottom of the rhinitis is reached, there is a general sense of resistance against a wall.

When you feel a sense of resistance, you have reached the bottom of the nasopharynx. At this time, you need to keep the nasopharyngeal swab at the bottom of the rhinitis for 10-15 seconds. After fully contacting the secretion, rotate it and pull it out.

Deep Nasal Swab Manufacturer Virus Respiratory Kit

Specifically designed for the collection, transport and preservation of virus-containing samples such as influenza, covid-19, avian influenza, and respiratory viruses such as hand, foot and mouth. 2-8 ℃ can be stored and transported for a short time, long-term storage should be at -80 ℃ or below.

Disposable medical sample collection swab, consisting of a plastic rod with and a flocked fibre tip 

VTM (non-inactivated version) and VTM-N (inactivated version) are available for selection.

Ready-to-use tear-off packaging, is convenient and quick, to avoid possible cross-contamination during use.

Equipped with a biosafety sample bag, which is convenient for placing samples and paper documents, the transfer is safe and reliable.

Product number product description
VTM-CM-0403

VTM-CM-0202

 

VTM-CM-0203

 10ml sample transport tube contains 3ml VTM transport medium, 1 sampling swab, 1 biological specimen bag

 

5ml sample transport tube contains 2ml VTM transport medium, 1 flocked swab for sampling, 1 biological specimen bag

 

5ml sample transport tube contains 3ml VTM transport medium, 1 sampling swab, 1 biological specimen bag

Sampling swabs include nasopharyngeal swab (Deep Nasal Swab) or oropharyngeal swabs

 

Disposable Virus Sampling Tube Manufacturers

Disposable Virus Sampling Tube Manufacturers

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What kind of virus sampling tube do you know? Does the following look like what you know? The following is introduced to you by Disposable Virus Sampling Tube Manufacturers — Cell medical (Dongguan) Co., Ltd.

What is Virus Sampling Tube? When should the virus preservation solution be used?

Disposable Virus Sampling Tube Kits

Disposable Virus Sampling Tube Kits

Virus transport medium, virus preservation solution: a protective liquid medium added to the virus sampling tube to protect the samples after nasopharyngeal swab sampling.

Generally, in the process of nucleic acid detection, we cannot directly conduct nucleic acid PCR experiments at the sample collection site.

If we need to check the samples collected by the flocked swab, we need to add the virus preservation solution.

Why use a virus sampling tube?

First of all, we have to understand what is a virus? Why does it need a virus sampling tube?

virus sampling tube

virus sampling tube

What is a virus?

Virus: a non-cellular form composed of nucleic acid molecules and proteins.

It lives on parasitic hosts and is an organic species between living and non-living bodies.

It is one end of DNA or RNA wrapped in a protective shell.

Through the mechanism of infection, these simple organisms can use the host’s cellular system to replicate themselves but are unable to grow and replicate independently.

Viruses can infect almost all living organisms with cellular structures.

Virus detection is different from conventional biochemical detection.

The virus itself is a simple microorganism and must be parasitic in living cells.

After sampling, when the virus leaves the host cell, its protein shell and nucleic acid degrade rapidly in the sampling tube.

So that the nucleic acid During the test, it is impossible to determine whether the initially collected sample contains the virus, which is likely to cause false negatives.

A virus delivery medium (virus sampling tube), a general-purpose sampling product: for sampling various virus samples, chlamydia samples, and ureaplasma samples.

Short-term storage and transportation at 2-8°C, and -80°C refrigerator or liquid nitrogen Long-term preservation in the environment.

1. For monitoring and sampling infectious pathogenic microorganisms by disease control departments and clinical departments.

Suitable for influenza virus (common influenza, highly pathogenic avian influenza, influenza A H1N1 virus, etc.), hand, foot and mouth virus and other types of virus sampling. It is also used for sampling Mycoplasma, Chlamydia, Ureaplasma, etc.

2. To transport nasopharyngeal swab specimens or tissue specimens from specific parts from the sampling site to the testing laboratory for extraction and testing.

3. Preserve nasopharyngeal swab samples or tissue samples from specific parts for necessary cell culture.

4. For short-term storage and transportation of virus samples at 2-8°C and long-term storage in a -80°C refrigerators or liquid nitrogen environments.

There are two types of virus preservation solutions: inactivated and non-inactivated

The inactivated virus preservation solution is mainly a virus lysis type preservation solution improved by nucleic acid extraction lysis solution, which is added with a high concentration of lysis salt, which can quickly and efficiently deactivate the virus protein in the sample to be tested and can effectively prevent infection.

At the same time, it also contains an RNase enzyme inhibitor, which can protect virus nucleic acid from degradation.

As long as the subsequent NT-PCR experiment can detect the nucleic acid of the virus, we can diagnose it.

Stored at room temperature for a relatively long time.

The non-inactivated preservation solution is mainly a virus maintenance solution that is improved on the basis of the transport medium.

It can retain the protein coat of the virus and the viral nucleic acid DNA or RNA at the same time so that the virus has the integrity of the protein epitope and nucleic acid in vitro.

Of course, there is also a certain risk of infectivity when the operation is wrong.

It is necessary to keep a strictly low temperature for long-term storage after sampling.

No matter what kind of virus preservation solution it is, we must test it as soon as possible after sampling or keep it strictly at a low temperature to ensure that the detection is accurate.

Due to the rapid reproduction and mutation of the virus, the virus preservation solution plays a crucial role in maintaining the stability of the virus sample.

Manufacturers CellMedical Virus Sampling Tube Kits Advantages

1. Add protein-stabilizing components such as BSA to the sampling solution to reduce the speed of virus decomposition and greatly improve the positive rate of virus isolation.
2. It is stable at room temperature and can keep its activity within 1 year.
3. Gentamicin replaces penicillin to avoid allergic reactions;

4. Using flocked swabs, the sample has a higher collection rate and release rate;
Samples can be stored for a long time (-20 ℃ ordinary refrigerator, -80 ℃ low-temperature refrigerator, -197 ℃ liquid nitrogen);
6. Thickening and anti-leakage design to ensure that the sample does not leak, in line with WHO regulations and biosafety regulations.

China Medical Nasal Foam Swab Factory And Manufacturers

China Medical Nasal Foam Swab Factory And Manufacturers

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Nasal Foam Swab Factory And Manufacturers.

Polyurethane foam swabs are ideal for sample collection and rapid elution.

It can immediately release the specimen into the transmission medium and has been widely used in epidemiological detection, molecular genetics, forensics, clinical laboratories and other fields.

Cell Medical (Dongguan) Co., Ltd. is a Class II medical device manufacturer integrating R&D, production, sales and service.

Collection & Storage & transport Solutions.

Composition of foam swabs

152mm Disposable Foam Swab (Sponge Swab)

152mm Disposable Foam Swab (Sponge Swab)

Medical-grade foam tip of the swab using ultrasonic technology, so the swab contains no adhesive and will not contaminate the contact.

The tips of the foam swabs are designed in a variety of shapes, including original round, rectangular and conical, etc., which can be used on different occasions.

Polyurethane foam nasal swabs

Application of foam swabs

  1. As a biological sample collection swab to collect samples such as throat/nasal/blood DNA and RNA.
  2. Disable medicines can be applied to the wound.
  3. Used to clean various precision instruments, including medical instruments, lenses, printer nozzle solutions, chips, etc.

Features of Polyurethane Foam Swabs

China Medical Nasal Foam Swab Factory And Manufacturers

China Medical Nasal Foam Swab Factory And Manufacturers

 

  1. The fibre-free structure can effectively prevent static electricity and avoid the generation of dust particles.
  2. Multiple particles on the swab trap the collected objects and strongly absorb and lock the solvent.
  3. Because the foam is soft and non-abrasive, it won’t scratch even the most sensitive surfaces.
  4. 100ppi medical polyurethane foam tip and rigid polystyrene handle for fast elution of large volumes of liquids and samples.
  5. Has multiple pores to maximize the collection of samples such as mucus.
  6. The handle: Made of materials that are easy to break.
  7. Or designed with breaking points, which allow you to easily break the swab, which makes it more convenient for users to handle samples.
  8. It releases the specimen immediately into the transport medium for applications in microbiology testing, rapid antigen testing, and molecular and clinical diagnostics.
  9. used to clean various precision instruments, including medical instruments, lenses, printer nozzle solutions, chips, etc.

Cell Medical (Dongguan) Co., Ltd. was established in 2010, the company is located in Chang’an, Dongguan.

We mainly produce flocked swabs, sponge sampling swabs, preservation transport media, virus sampling tubes and saliva collectors.

Committed to providing cell, virus, microbial sample collection, storage and transportation solutions for life sciences, CDC, in vitro diagnostics and medical testing.

After more than 10 years of unremitting efforts and the pursuit of excellence in quality, CellMedical has now become a Class II medical device manufacturer integrating R&D, production, sales and service. Medical care means high technology and rigour.

We always adhere to the concept of “survive by quality and develop by innovation”.

ABOUT VTM kits and swabs manufacturer

ABOUT VTM kits and swabs manufacturer

The company has an 8,000-square-meter workshop, a 3,500-square-meter GMP workshop and a 600-square-meter laboratory.
The sterile sampling swabs we produce have a high collection volume and release volume, which greatly enhances the accuracy of the inspection;
The flocked swab nasopharyngeal swab rod we invented completely solved the hidden danger that the swab would break in the human body.
The company has a wise and forward-looking management team and experienced technical backbones.
CellMedical has passed the ISO13485 quality management system, and all products have CEor US FDA certification.
Flocking swabs and sponge swabs have Class II product registration certificates.