Viral Transport Medium Tube Suppliers

Posted on 2022年4月22日2022年4月22日 by Dr. Lee

PCR Swab Test detection disposable virus sampling tube inactivated non-inactivated production supplier

Viral Transport Medium Tube: virus transport tube, which consists of a virus storage tube and virus storage solution.

Virus transport tube: specially designed in combination with subsequent PCR instruments for the rapid detection of viral diseases.

The virus preservation solution ( Viral Transport Medium) is a protective liquid medium added to the virus sampling tube to protect the samples after nasopharyngeal swab sampling.

Includes inactivated viral transport media and non-inactivated viral transport media.

Usually, during nucleic acid detection, nucleic acid PCR cannot be performed directly at the sample collection site.

If the samples collected by flocked swabs need to be transferred for inspection, VTM needs to be added.

Virus detection is different from conventional biochemical detection.

The virus itself is a simple-structured microorganism that must be parasitic in living cells.

After sampling, the virus leaves the host cell. Its protein shell and nucleic acid are quickly degraded in the sampling tube.

So it is impossible to determine whether the initially collected sample contains the virus during nucleic acid detection, which may easily lead to false negatives.

Viral Transport Medium Tube Suppliers

　　The non-inactivated virus preservation solution contains a variety of solution components that are beneficial to the cultivation of virus cells. Which can ensure the integrity of the virus and help increase the survival time and stability of the virus.

　　A virus is a non-cellular life form that consists of nucleic acid molecules and proteins or only proteins, an individual is a small and simple structure that contains only one nucleic acid (DNA or RNA). Without a cellular structure, viruses cannot replicate themselves, but instead, insert genes into host cells and use the latter’s replication system to replicate new viruses. Common infectious diseases are usually RNA viruses, such as influenza virus, HIV virus, H1N1 virus, etc.

After the collection of virus samples, stored and transported in a virus preservation solution to maintain the activity of virus samples and prolong the survival time of viruses in the samples.

Viral Transport Medium with Flocked Swab

　　In addition, we also provide inactivated virus sampling tubes, which can make the sample infective. Thus improving the safety of sample storage and transportation. The product is supplied in bulk liquid medium for further processing, such as into smaller sample tubes.

Inactivated or non-inactivated virus preservation solution. Its basic function is to protect the integrity of virus or viral nucleic acid and ensure the accuracy of viral nucleic acid detection.

Both VTMs have their own advantages.

CellMedical’s virus sampling tubes with a flocked swab to help users collect samples, and there are a variety of swab models to choose from.

　　NOTE: For large-scale nucleic acid testing in non-risk areas during a pandemic, high-volume viral transport media that can hold 5 or 10 swab samples can greatly reduce testing costs.

Characteristics of non-inactivated virus transport media

　　VTM can safely transfer viruses, chlamydia and mycoplasma for further research and analysis.

　　The special formulation ensures optimal sample recovery and the added antibiotic inhibits the contaminating growth of bacteria and fungi.

　　Bovine serum albumin (BSA) acts as a protein stabilizer, but the protein coat of the virus forms a protective film. Making it difficult to decompose and ensuring the integrity of the virus.

　　Hanks’ buffer (HBSS) creates a neutral environment, which helps increase the survival time of the virus and the stability of infection.

　　This product is also equipped with flocked swabs to help users collect samples, and there are a variety of swab models to choose from.

2-3 ML UTM Tube Np Flocked Nasopharyngeal Instruction Swab Test

Applications of Viral Transport Medium Tubes

　　Non-inactivated virus preservation solution: for the preservation and transportation of clinical influenza, avian influenza (such as H7N9). Hand, foot and mouth disease, measles and other viral specimens and mycoplasma, urea. Chlamydia and other living specimens.

　　It is suitable for a variety of applications including classical cell culture methods, and diagnostic tests. And molecular biology techniques (including PCR)

Viral Transport Medium Tube Suppliers Manufacturer

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

VTM Kit, Viral Transport Media manufacturers, suppliers & exporters in china

The CellMedical production site covers an area of 15,000 square meters, with its own injection moulding production workshop. A thousand-level purification workshop, and more than ten automatic packaging production lines.

We support custom production, OEM and so on, and develop products with customers.

Virus sampling tubes and saliva collection devices can ensure the safety and stability of samples during transport;

Swabs using jet dense nylon fibre technology correspond to soft or brush texture swabs according to different analysis items, which have reached the maximum collection volume.

Disposable injection-moulded swab rods with breaking points and flocking technology. To enhance the adsorption/release of specimens and improves the sensitivity of the analysis.

No sample entrapment, heralding faster and fewer sample transfers.

CellMedical’s sampling flocked swab: made of plastic rod + ABS. Which is harmless to microorganisms and can maximize the collection and release of specimens.

The main products of Cell Medical (Dongguan) Co., Ltd. are disposable virus sampling tubes, virus sampling tube sets, disposable sampling flocking swabs, nasal swabs, throat swabs and other disposable medical equipment consumables.

Sold well at home and abroad. And the superior product quality and high-quality service attitude have won praise from many customers.

China Vtm Swab Supplier And Manufacturers

Posted on 2022年4月16日2022年4月16日 by Dr. Lee

China Vtm Swab Supplier And Manufacturers

As a major producer of anti-epidemic materials, China has supplied a large number of urgently-needed materials to countries around the world during the COVID-19 outbreak, making important contributions to global epidemic prevention and control.

Cell medical (Dongguan) Co., Ltd, is a comprehensive high-tech biotechnology company in Chang’an Town, Dongguan City, Guangdong Province. Daily production large number of flocked sampling swabs, “disposable virus sampling tubes”, and “virus transport media” VTM kits” help prevent the epidemic control.

CellMedical is a high-tech biotechnology enterprise, dedicated to the research and development, production and sales of nucleic acid testing, molecular diagnosis, medical testing, virus testing and other medical device products.

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

Products independently developed by CellMedical.

The company’s independent research and development products include disposable virus sampling tubes, and disposable sampling flocking swabs. Medical cotton swab. Cell preservation solution, virus transport medium, saliva collection device. Transport medium, virus transport medium, single-use sampler, Sample preservation solution. Vtm swab, vtm tube, nucleic acid extraction reagent, gene detection reagent, new coronary pneumonia detection reagent and other products.

What is a virus sampling swab kit?

Covid VTM Swab Test

The virus sampling swab set is a virus sampling and transfer product for virus nucleic acid detection.

It generally consists of a sampling swab, a sampling tube and a virus preservation solution.

For the nasopharyngeal and oropharyngeal new coronavirus sampling swab sets.

Also known as virus transport medium (Viral Transport Medium), referred to as VTM.

According to the composition and function of virus preservation solution, it includes non-inactivated and inactivated types.

The purpose of the single-use virus sampling tube:

Viral Transport Medium With Swab

The single-use virus transport medium with tube is our company’s best-selling star product. It is suitable for the collection and transfer storage of various influenza viruses, clinical new coronaviruses, influenza, measles and other virus samples. nucleic acid extraction and later virus isolation.

It is also suitable for collecting and transporting specimens such as Chlamydia, Mycoplasma, and Ureaplasma urealyticum.

Specimens are usually collected from the oral cavity, throat, nasopharynx, anus, and other human body parts.

Combination features of our single-use virus sampling tube kits (vtm swab kits):

Disposable virus sampling tubes include sampling swabs and sampling tubes (vtm kits).

Test Sample Collection Vtm Kit

1. Sampling flocking swab: our company uses a nylon flocking swab (vtm swab). Because nylon flocking has no toxic effect on microorganisms and viruses and does not contain RNase and DNase.

It can maximize the collection and release of virus samples and ensure the accuracy of PCR test results.

The flocked swab rod: ABS material, with a unique breakpoint design.

Convenient to put into the sampling tube without contamination.

2. Virus sampling tube: The tube body and tube cover are made of polypropylene, which will not deform at high temperature and high pressure (121°C, 15min). And will not become brittle at low temperatures (-196°C).

Resistant to static extrusion and dynamic impact.

The bottom cone design is resistant to centrifugation and shock.

They are packed with a transport medium (inactivated type, preserved type) for the release and preservation of samples to prevent leakage.

The sampling tube has built-in magnetic beads, which are convenient for elution and facilitate the release of more viruses into the virus transport medium.

Before the higher positive rate of PCR detection, the storage solution in the virus sampling tube was Hank’s solution.

Now, the virus sampling tube preservation solution has been upgraded to CellMedical virus preservation solution.

(that is, UTM, recommended by the World Health Organization and the National Influenza Center of China.)

Based on hank’s solution, BSA, HEPES, amino acids, glycerin and other ingredients. A high PCR test is positive.

Virus preservation solution includes non-inactivated virus transport medium and inactivated virus

In the non-inactivated COVID-19 sampling swab set, the components of the virus preservation solution usually include nutrients (such as salts, proteins, glucose), bacteriostatic agents, buffers, phenol red indicator, etc. required for the survival of the virus.

This virus preservation solution can maintain the activity of the virus to the greatest extent.

Not only for virus detection but also for virus culture and isolation.

In the inactivated new coronavirus sampling swab kit, the components of the virus preservation solution usually include buffers, virus lysing agents (usually guanidines), surfactants, etc.

This preservation solution can directly lyse the virus to release nucleic acid, which is convenient for subsequent nucleic acid detection.

China Vtm Swab Supplier

We are a well-known professional manufacturer of medical sampling and preservation products.

Our company has a number of patents.

Mainly used in genetic testing, biopharmaceuticals, large-scale A-level hospitals, entry-exit inspection and quarantine, diagnostic reagents, CDC, public security criminal investigation, forensic identification and other medical institutions.

vtm swab kits feature

Safety: Contains virus inactivator efficacy to ensure no risk of leakage and infection.
Functionality: Inactivate the virus while protecting the activity of viral RNA and protein, which can be used for viral nucleic acid detection, antigen detection, IgM, IgG antibody detection,) (other products that only preserve RNA are used for viral nucleic acid detection);
Effectiveness: Equipped with a special virus sampling flocked swab, the virus release rate is more than 95% (more than 3 times higher than ordinary cotton swabs).
Stability: It can be effectively stored for 144 hours at 2-8℃, which is convenient for transportation and mailing.
Versatility: Applicable to various viruses such as new coronavirus, influenza, HPV, hand, foot and mouth disease, measles, etc.

Viral Transport Medium With Swab

Posted on 2022年4月14日2022年4月14日 by Dr. Lee

Viral transport medium with swab

The COVID-19 outbreak is expected to have a significant impact on the tedious market for swabs and virus transport media owing to the increasing patient demand for infection diagnosis.

Flocked Swab and viral transport media are expected to grow due to intensive testing of COVID-19 in research institutions and laboratories.

Rising research and development activities to produce COVID-19 vaccines are expected to drive market growth during the pandemic.

The rising number of COVID-19 cases in the global population is expected to drive market growth.

The need to develop vaccines and early diagnostics to treat infections is expected to boost the market growth.

Manufacturing of Viral Transport Medium

Virus sampling tubes are medical device products. The virus sampling tube consists of a sampling flocking swab, virus transport medium and outer packaging. Since there is no unified national standard or industry standard, the products of various manufacturers vary greatly.

CellMedical manufactures viral transport media (VTM) following WHO and CDC recommendations, with or without swabs.

Flocked swab+tube with Viral transport medium

1. Sampling swab:

Virus sample collection flocked swab

The specimen collection swab directly contacts the sampling site, and the material of the sampling head is closely related to the subsequent detection.

　　Synthetic fibres such as PE synthetic fibers, polyester fibres, polypropylene fibers, and rayon fibres should be used for the manufacture of sampling swab tips.

　　(1) Natural fibers such as cotton are not recommended

　　Because the fiber of cotton has strong adsorption of protein, it is not easy to be eluted into the subsequent preservation solution;

　　(2) Nylon fibers are also not recommended

　　Because nylon fibers (similar to toothbrush heads) have poor water absorption, the sampling volume is insufficient and the detection rate is affected.

　(3) Do not use calcium alginate sponges or wooden stick swabs (including bamboo sticks) for the head of the sampling swab.

　　Because the broken wooden sticks or bamboo sticks containing calcium alginate and wooden components will also adsorb proteins after being soaked in the preservation solution, and even have an inhibitory effect on the subsequent PCR reaction.

Flocked swabs manufacturers

Features of CellMedical Flocked Swabs:

1. Has extraordinary adsorption energy.

2. It has a release rate of more than 95% for the collected specimens, thus ensuring a high degree of reliability of the results;

3. There is a unique breakable design on the plastic rod, which is convenient for specimen transportation;

4. Sterilized by ethylene oxide or irradiation, individually packaged;

Nasopharyngeal and oropharyngeal swabs. learn more

2. Virus preservation solution (virus transport medium): There are mainly two kinds of virus preservation solutions widely used in the market, one is a virus maintenance solution improved based on the transport medium, and the other is an improved nucleic acid extraction lysate. Preservation solution.

3. Virus sampling tube: The material of the storage tube should be selected carefully. Some data suggest that polypropylene (Polypropylene) is related to the adsorption of nucleic acids, especially at high tension ion concentration, polyethylene plastic (Polyethylene) than polypropylene (Polypropylene) Easier to grab DNA/RNA. In addition, when using breakable swabs, the storage tube should try to choose a container with a height of more than 8 cm to prevent the contents from splashing and contaminating when the swab is broken.

Virus Sampling Tube

4. Water for production of preservation solution: Ultrapure water used for the production of preservation solution should be filtered by an ultrafiltration membrane with a molecular weight of 13,000 to ensure the removal of biologically derived polymer impurities, such as RNase, DNase and endotoxin, and ordinary purification is not recommended. water or distilled water.

About the use of virus sampling tubes

Sampling using virus sampling tubes is mainly divided into oropharyngeal sampling and nasopharyngeal sampling:

1. Oropharyngeal swab sampling:

first press the tongue with a tongue depressor, then insert the head of the sampling swab into the throat to wipe the bilateral pharyngeal tonsils and posterior pharyngeal wall, and wipe the posterior pharyngeal wall with mild force, avoiding touching the tongue department.

2. Nasopharyngeal swab sampling:

measure the distance from the tip of the nose to the earlobe with a swab and mark it with your fingers, insert the sampling swab into the nasal cavity in the direction perpendicular to the nose (face), and the swab should be inserted at least half the length from the earlobe to the tip of the nose. Leave the swab in the nose for 15-30 seconds, swirl gently 3-5 times, and withdraw the swab.

It is not difficult to see from the method of use, whether it is an oropharyngeal swab or a nasopharyngeal swab, sampling is a technical task, which is difficult and easy to contaminate. The quality of the collected samples is directly related to the subsequent testing. If the viral load of the collected samples Low, easy to cause false negatives, difficult to diagnose.

Most of the samples recommended by the kits currently on the market are oropharyngeal swabs or nasopharyngeal swabs and bronchoalveolar lavage fluid. This can greatly reduce the difficulty of the samplers’ work. After all, it is not difficult to collect venous blood samples, and like the detection of hepatitis C RNA, about 5 ml of EDTA anticoagulated blood samples are separated into plasma, and the extracted and purified RNA can fully meet the needs of PCR detection.

Preservation solution features:

Our independent research and development and production, unique cell preservation technology, can be stored at room temperature for more than 3 years after sampling! No need to refrigerate, store and transport at room temperature.

Viral Transport Medium With Swab Factory

By Type

Swab Type
	Nasopharyngeal swab
	Throat swab

Transmission medium

By Application
		Coronavirus disease
		influenza
		herpes simplex virus
		other

By end-user
		Hospitals and Clinics
		diagnostic laboratory
		other

geography

North America
	The U.S.
	Canada
	Mexico

Europe
	Germany
	The U.K.
	France
	Italy
	Spain
	Rest of Europe

Asia Pacific
	China
	Japan
	India
	Australia
	South Korea
	Rest of Asia Pacific

The Middle East and Africa
	GCC
	South Africa
	Rest of the Middle East and Africa

South America
	Brazil
	Argentina
	Rest of South America

VTM Collection Kits (VTM Kits) For Diagnosis

Posted on 2022年4月13日2022年4月13日 by Dr. Lee

VTM Collection Kits preservation systems such as virus collection.
For the collection and transportation of coronavirus, virus, bird flu, hand rash, and measles. The original aptamer and the original specimen, Chlamydia branch.

Generally, the virus subsystems and components are probed from the mouth, nose, throat, throat swab, etc.: throat probe virus preservation, transportation, and biohazard bags.

The CellMedical Virus Collection and Storage System is compatible with most DNA and RNA isolation methods.

It has been validated for COVID-19 testing.

VTM Kits

VTM Swabs

Viral Transport Medium

Safe and convenient transportation:
It inactivates microorganisms and viruses for safe and convenient transportation and handling.

To save RNA/DNA:
Used to store total RNA and DNA, including viral RNA and DNA, at room temperature.

Sample Type:
Used to collect a variety of sample types, including nose, mouth, throat, and skin samples.

Flocked Swab

Nylon flocked swab

Made of nylon fibre flocking technology, the front end is coated with nylon short fibers fixed in a vertical manner.

Increasing the efficiency of collection and release of cellular and fluid samples.

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

The collected sample does not disperse and remains in the fibre, facilitating faster and more efficient elution.

Traditional spun cotton swabs cannot completely collect and elute the sample, while flocked swabs can elute more than 95 per cent of the sample collected.

So the use of flocked swabs has great advantages for a variety of sample collection applications.

Because most of the testing tools used for nucleic acid testing are disposable sampling swabs, we usually see more nasal swabs and throat swabs.

Improve analytical sensitivity, no sample residue, and speed up sample processing.

PS stickers come off easily. Suitable for cervical, nasopharyngeal, oral, forensic collection systems and DNA collection, etc. Individually packaged.

Flocked swabs are biocompatible and ideal for PCR work.

PCR is compatible, free of RNase and DNase, so the new flocked swabs are ideal and a good choice for scientists working with PCR technology.

Flocked swab sampling is more comfortable and easier to use;

CellMedical’s flocked swabs use the existing technology “spraying technology”, which is to vertically attach millions of nylon fibres to the head of the medical swab shaft through electrostatic charges in the flocking hair.

Flocked Nasopharyngeal Swab Suppliers and Manufacturers

The vertical nylon fibres resemble a soft brush.

During sampling, the user will have no foreign body sensation.

In addition, different parts have different breaking points of the flocking swabs used, and the thickness of the swab rod is also different.

So there is a big difference in softness.

For example, for nasal swabs, the upper end of the swab rod is thin and soft, and the breaking point is also relatively back.

What Is Specimen Collection ?

Posted on 2022年3月29日2022年3月29日 by Dr. Lee

The surge of covid-19 has seriously affected our life and production.

With the efforts of most scientific researchers, the test of this virus came out.

Collection methods of common virological test specimens.

Nasal Swab Virus Sampling Kits

1. Draw 5 ml of blood for serological examination without anticoagulation

2. Extract cerebrospinal fluid through an aseptic procedure, place it in a sterile test tube, and immediately send it for examination in an ice bath.

3. Take a cervical or vaginal swab to take the secretions from the lesion site.

If there is no lesion site, clean the mucus of the cervical mouth, stick the swab about 1 cm into the cervix and hold it for more than 5 seconds to take it out. And put the swab in the transport solution on the ice at 4 °C.

4. Fecal specimens Take 2g~4g of stool specimens in a sterile container, add 8ml~10ml of transport fluid, and send them for inspection immediately.

5. Gargle solution: The patient can get it by gagling with sterile normal saline several times. After mixing the same amount with the transport solution, send it for inspection immediately.

6. Throat swab: Use a tongue depressor to fully expose the throat to avoid saliva contamination. Use a swabened moist with normal saline to collect specimens on the surface of the throat, and place them in transport fluid for inspection.

7. Nasopharyngeal swab: Take nasopharyngeal secretions for bacterial culture and drug sensitivity test.

7. Urethral swabs and urine specimens. The tester inserts the urethral swab 4 cm into the urethra and rotates it gently 2 to 3 times to obtain more epithelial cells. Then take it out and send it to the transport fluid for inspection.

The classification of new coronavirus nucleic acid samples includes nasopharyngeal swabs, oropharyngeal swabs and anal swabs. Different specimens use different methods for specimen collection.

What is a Specimen Collection Kit?

Viral Transport Kit: for collecting, handling, and transporting specimens suspected of VIRUS.

Generally equipped with a disposable flocking swab. From the appearance point of view, the flocking swab is white and soft. Using this soft brush during the sampling process will make the user feel no foreign body, and it is suitable for sampling in different parts. people.

Virus sampling tube: When collecting samples, routine samples could not be detected by PCR immediately. It is generally necessary to transport the swab sample with the specimen. The virus itself dissolves rapidly in vitro, affecting subsequent experiments. For transport, viral transport medium must be added.

What is the Specimen Collection Kit used for?

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

1. Disposable virus sampling tube is used for monitoring and sampling infectious pathogenic microorganisms in the disease control part and clinical part. Suitable for sampling influenza virus (common influenza, highly pathogenic avian influenza, H1N1 influenza virus, etc.). Hand, foot and mouth disease virus and other types of viruses.

It can also be used for sampling other respiratory diseases such as Mycoplasma and Chlamydia. COVID-19.

2. For transporting nasopharyngeal swab samples or site-specific scheduled samples from the sampling point to a testing laboratory for extraction and testing by polymerase chain reaction.

3. For the preservation of nasopharyngeal swab samples or samples arranged at specific sites for necessary cell culture.

Swab in specimen collection

1. Swabs with polyester fibre, polyester or rayon head and plastic or aluminium handle: suitable for the collection of virological test specimens. The collection of virological test specimens should not use swabs with wooden handles.
2. Cotton swabs: It is suitable for the collection of vaginal, cervical and urethral specimens for the mycoplasma test. It is not suitable for the collection of bacteria (especially fastidious bacteria) and chlamydia test specimens.
3. Polyester swabs and nylon swabs: suitable for a sampling of virus and bacterial specimens.
4. Flocked swab: It is made of nylon fiber through proprietary spray technology, and is suitable for respiratory virus sampling and fungal culture specimen sampling.
5. Calcium alginate swab: suitable for the collection of nasopharyngeal swabs for Chlamydia and Bordetella pertussis.

However, it is not suitable for the sampling of lipid-enveloped virus and cell culture. It is not suitable for the sampling of Neisseria gonorrhoeae and Ureaplasma urealyticum.

What Is Virus Transport Medium

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

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

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

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.

Viral transport media for COVID-19 testing

Posted on 2022年3月25日2022年3月25日 by Dr. Lee

At present, medical technology needs to promote positive energy!

The current epidemic has come and gone.

In particular, important medical materials such as disposable virus sampling tubes (virus transport media) play a key role.

At present, the quality of the products of various manufacturers on the market is also uneven, and there is also a risk of affecting the accuracy of the experimental results.

Make products with a realistic and rigorous scientific attitude;

Let the front-line medical staff have no worries, and provide them with a steady stream of “cannonballs”.

Below we will define the virus delivery medium and explain typical components and options for use.

What is a virus transport medium?

10ml Viral Transport Medium VTM Swab Tube Kit

It is suitable for the collection of various influenza viruses, avian influenza viruses, COVID-19 novel coronavirus, hand, foot and mouth virus samples.

Realize the lysis and inactivation of the virus in the sample.

At the same time effectively ensure the stability of the viral nucleic acid in the sample during storage and transportation at room temperature.

And collect the sample for subsequent PCR analysis and detection.

Features:

✳ Room temperature stable storage;

After use, Stored at room temperature for 7 days, which is conducive to the collection and transportation of samples.

✳ Quick release

Using swabs to collect samples is conducive to subsequent nucleic acid release.

✳ Safe and rapid inactivation of virus samples

The preservation solution can quickly inactivate virus samples, effectively reducing the level of biosafety requirements for sample transportation and subsequent testing laboratories.

✳ Swab breakpoint design

After sampling, the designed rod breakpoint design can easily break the head and save it in the tube.

What are the components of the viral transport medium?

The sample transport medium, viral transport medium (VTM), stabilizes cells and viruses in potentially infected patient samples during transport from the point of collection to the testing facility.

These reagents are suitable for various types of viruses, including coronaviruses, herpes viruses, and influenza viruses.

CellMedical’s products for sample transport include viral transport media and saline solutions, which are both efficient collection and transport media for subsequent qPCR assays.

All sample transfer media are manufactured in a state-of-the-art GMP facility certified to ISO 13485:2016.

UTM Tube with NP Flocked Flexible Swab

1. Virus sampling tube;

Some data suggest that polypropylene (Polypropylene) is related to the adsorption of nucleic acids, especially at high tension ion concentration, polyethylene plastic (Polyethylene) is easier than polypropylene (Polypropylene) to grasp DNA/ RNA.

In addition, when using breakable swabs, the storage tube should try to choose a container with a height of more than 8 cm to prevent the contents from splashing.

Some tubes may be formulated to contain buffered proteins and antibiotics to inhibit the growth of potentially contaminating bacteria and fungi.

2. Virus Transport Media;

VTM consists of Hanks Balanced Salt, Foetal Bovine Product, anti-bacterial prescription antibiotics, anti-fungal anti-biotics as well as Phenol Red as an indication for real-time surveillance of pH security of the service.

3. Collection of flocked swab;

The sampling swab directly contacts the sampling site, and the material of the sampling head is closely related to the subsequent detection.

Sampling swab tips should be made of Polyester (PE) synthetic fibers or Rayon (man-made fibers).

Prohibit calcium alginate sponges or wooden stick swabs (including bamboo sticks).

For example, the material of the swab tip cannot be cotton.

Products, because cotton fibers have strong adsorption of protein.

It is not easy to be eluted into the subsequent preservation solution.

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

Viral transport media applications

The virus sampling tube is a complete set of centrifuge tubes for sampling and transporting viruses such as influenza virus, hand, foot and mouth virus, covid test, etc. in the microbial sampling transport tube, also known as the specimen transport tube.

In the current epidemic, virus sampling is also an important part. Generally, viruses exist in large quantities in the nasopharynx of the human body.

The pharyngeal tester collects virus samples from the nasopharynx and puts them in a virus sampling tube.

Ethylene Oxide Covid Test Sterile Swab

Posted on 2022年3月17日2022年3月30日 by Dr. Lee

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

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

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.

What is Viral Transport Media

Posted on 2022年3月14日2022年3月30日 by Dr. Lee

What is VTM?

VTM is the acronym for Viral Transport Media, which contains nutrients that carry the virus and keep it active so that the sample can reach the laboratory for testing.

VTM virus preservation solution is suitable for the collection, preservation and transportation of common virus samples.

Such as new coronavirus, influenza virus, hand, foot and mouth virus. It can collect throat swabs, nasal swabs or tissue samples from specific parts.

And the stored samples can be used for subsequent nucleic acid extraction or Purification and other clinical experiments.

Virus Transport Medium (VTM) Definition

The virus transport medium sampling tube is a complete set of centrifuge tubes for sampling and transporting viruses.

What is Viral Transport Media

Such as new coronavirus, influenza virus, hand, foot and mouth virus in the microbial sampling transport tube.

Also known as the specimen transport tube. commoditized products.

A nutrient is used to carry and maintain the viability of test specimens (viruses) for the identification and further processing of samples in laboratories.

Viral Transmission Media Principles (VTM)

Since there is no cellular structure. Viruses cannot replicate themselves, but instead, invade genes into host cells and replicate new viruses with the help of the latter’s replication system.

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 will be put into the transportation medium for storage and transportation.

Transportation medium composition and inspection principle:

1. The combination of various antibiotics has broad-spectrum antibacterial and antifungal effects.

2. As a protein stabilizer, bovine serum albumin (BSA) can form a protective film on the protein shell of the virus, making it difficult to decompose and ensuring the integrity of the virus

3. The neutral environment constructed by Hank’s buffer helps to increase the survival time and infection stability of the virus.

4. Phenol red is an acid-base indicator, the discoloration area is 6.6 (yellow)-8.0 (red), and it is red at 7.2-7.4.

Vtm Kit

The most stable pH value of the viral outer layer protein is 7.2-7.4, which is also the pH value range of Hank’s buffer. If contaminating molds or bacteria are not inhibited by antibiotics, they can multiply, releasing carbon dioxide and lowering the pH.

At this time, the appearance of the sampling solution will change from red to yellow.

Notes:

To produce an isotonic solution containing proteins to protect viral structures, antibiotics to control microbial contamination, and one or more buffers to control pH.
Use the concept of assays such as nucleic acid amplification assays (NaAt) to prepare viral delivery media while preventing samples such as drying.

Composition of viral transport media (VTM Kits)

There are mainly the following parts:

1. Sampling swab with disposable sterile plastic rod/rayon head;

2. Sterile sampling tube containing 3ml of virus maintenance solution;

In addition, there are additional parts such as a tongue depressor, a biosafety bag, etc.

Viral delivery media typically have protective protein components, antimicrobial agents to prevent the potential for contamination, and buffers to maintain the pH of the solution.

Some VTMs also have additional ions and minerals that help keep such samples viable.

How to use Virus Transfer Media?

Liquid transfer media are primarily used to transfer the swab or material from the collection swab into the media.

It facilitates the collection and transport of samples in areas where it is not available.

Precautions for use:

1. Before sampling, indicate the sample information on the label of the cryopreservation tube;

2. According to different experimental purposes, use sampling swabs to sample at the corresponding parts (the most commonly used are nasopharyngeal swabs, pharyngeal swabs are the oral swabs in the product);

3. Immediately after sampling, put the swab into the sampling tube containing the virus transport medium, break it at the breaking point, and tighten the tube cover;

4. The specific sampling methods are as follows:

a) Nasal swab: Gently insert the flocked swab head into the nasal palate, stay for a while and then slowly turn to exit. Swab the other nostril with another swab, immerse the swab head in the sampling solution, break it at the breaking point, and discard it.

b) Pharyngeal swab: Wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with a flocked swab, and also immerse the swab head in the sampling solution and discard it.

Flocked Cotton Throat Oral swab 15Cm

China Specimen Collection Swab Factory

Posted on 2022年3月12日2022年3月30日 by Dr. Lee

Virus detection is different from conventional biochemical detection.

The non-inactivated virus preservation solution contains a variety of solution components that are beneficial to the cultivation of virus cells. Which can ensure the integrity of the virus and help increase the survival time and stability of the virus.

Characteristics of non-inactivated virus transport media

Applications of Viral Transport Medium Tubes

Viral Transport Medium Tube Suppliers Manufacturer

We support custom production, OEM and so on, and develop products with customers.

Products independently developed by CellMedical.

What is a virus sampling swab kit?

The purpose of the single-use virus sampling tube:

Disposable virus sampling tubes include sampling swabs and sampling tubes (vtm kits).

Virus preservation solution includes non-inactivated virus transport medium and inactivated virus

vtm swab kits feature

Manufacturing of Viral Transport Medium

1. Sampling swab:

Features of CellMedical Flocked Swabs:

Sampling using virus sampling tubes is mainly divided into oropharyngeal sampling and nasopharyngeal sampling:

1. Oropharyngeal swab sampling:

2. Nasopharyngeal swab sampling:

Preservation solution features:

VTM Kits

Nylon flocked swab

Flocked swabs are biocompatible and ideal for PCR work.

Collection methods of common virological test specimens.

What is a Specimen Collection Kit?

What is the Specimen Collection Kit used for?

Swab in specimen collection

How to detect it after inactivation?

What is a virus transport medium?

Features:

What are the components of the viral transport medium?

1. Virus sampling tube;

2. Virus Transport Media;

3. Collection of flocked swab;

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

Viral transport media applications

EO sterilization refers to ethylene oxide sterilization.

Ethylene Oxide Covid Test Sterile flocked Swab Principle

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

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

Is it safe for us to use a covid swab?

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.

What is VTM?

Virus Transport Medium (VTM) Definition

Viral Transmission Media Principles (VTM)

Transportation medium composition and inspection principle:

Notes:

Composition of viral transport media (VTM Kits)

How to use Virus Transfer Media?

Flocked swab

Virus sampling tube

Virus transport medium

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

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　　The non-inactivated virus preservation solution contains a variety of solution components that are beneficial to the cultivation of virus cells. Which can ensure the integrity of the virus and help increase the survival time and stability of the virus.