COVID-19 sampling tools help SARS-CoV-2 precise diagnosis!

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

Cell medical (Dongguan) Co.,Ltd. monthly production of millions of virus sampling swabs and VTM kits helps epidemic prevention and control.

What are the covid-19 sampling tools？

Flocked sampling Swabs,VTM Kits,Viral Transport Medium,VIRUS Collection & Transport Kits,Saliva collection kit,Disposable virus sampling tube,Op swabs,Np swabs,etc.

Why use sampling tools？

At present, the global New Coronavirus epidemic has reached a critical stage. The most reliable means of rapid diagnosis is still positive for nucleic acid detection. There has been a great breakthrough in the diagnosis of COVID-19, but clinicians, especially the laboratory doctors, still face the following serious problems:

1. Safety of specimens

The majority of “angels in white”, especially the laboratory doctors, are always facing the risk of virus infection.

Although there are various protective equipment, the risk of infection will increase if we can’t ensure the safety of specimens. Therefore, it is very important to ensure virus inactivation and the safety of collected samples.

2. False negative test results

The existence of false negative puzzles the clinic and affects the accuracy of diagnosis. The biggest problem is sample collection and preservation. The New Coronavirus infection prevention and control program (Fifth Edition) has been published to collect nasal swabs, throat swabs, sputum, lower respiratory tract secretions, blood and feces. The incorrect way of collecting and storing samples will lead to the degradation of viral RNA and directly lead to the false negative test results.

Cell medical (Dongguan) Co., Ltd. provides the perfect solution for sampling tools.

√. Cell medical provides samples of swabs collected from various viral types including New Coronavirus (covid-19) and provides a perfect solution.

√ .It can quickly inactivate viruses including New Coronavirus, influenza A virus and many other viruses.

√ .preservation solution: preserve RNA to prevent degradation.Disposable virus sampling tube.

√ .safety guarantee: vertical design, sampling and preservation in one step to reduce personnel exposure.

Sampling steps of new virus collection tube

1) The collection personnel shall be qualified through biosafety training and have corresponding experimental skills. Requirements for protective packaging of sampling personnel: N95 and above protective masks, goggles, one-piece protective clothing, double-layer latex gloves, waterproof boot covers, etc. in case of direct contact with the specimen, the protective equipment shall be replaced in time.

2) Sample type: pharyngeal swab and nasal swab.

nasal swab_COVID-19 sampling tools

Pharyngeal swab collection method: wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with a plastic rod swab with polypropylene fiber head

Nasal swab collection method: gently insert a plastic rod swab with polypropylene fiber head into the nasopalatine part of the nasal canal, stay for a moment, and then slowly rotate and exit. Take another plastic rod swab with polypropylene fiber head and collect the other nostril wall in the same way.

3) Specimen preservation: immerse the swab head into the tube containing virus preservation solution, discard the handle along the folding point of the sampling swab, and tighten the tube cover.

Notes

The tube containing virus preservation solution another name isvirus sampling tube.

Virus preservation solution is also called virus transport medium.VTM.

Nasal swab pcr test

Posted on 2021年9月7日2021年12月21日 by Dr. Lee

Nasal swab pcr test COVID-19 Antigen Rapid Test Kit

Detection of COVID-19 by nasal swab PCR is an accurate and reliable method. Positive detection means you may have SARS-CoV-2. Negative detection means you may not have SARS-CoV-2 when testing.

In order to ensure your safety, if you have symptoms of COVID-19. Or people who have been exposed to the virus and tested positive should be tested.

What is the symptom of COVID-19?

If you have the following symptoms,if you have the following symptoms, please buy covid-19 antigen rapid test kit immediately or go to a nearby hospital for PCR test.

1.Fever;

2.General fatigue;

3.cough;

4.Dyspnea or even respiratory failure；

5.Nausea;

6.vomiting;

7.abdominal pain;

8.diarrhea;

Symptoms of New Coronavirus pneumonia are not necessarily typical, and some patients may not have clinical manifestations at the early stage of New Coronavirus infection. Then clinical manifestations will appear, that is, “asymptomatic infection” in incubation period.

In other words, try to avoid activities in places with crowd gathering, closed space and poor ventilation.

What is nasal swab PCR test？

Polymerase chain reaction (PCR) uses a piece of DNA as a template. Then, with the participation of DNA polymerase and nucleotide substrate, the DNA was amplified to a sufficient number for structural and functional analysis.

Scientists use PCR technology to amplify a small amount of RNA in the sample into deoxyribonucleic acid (DNA) and replicate until COVID-19(if present) is detected.

What should we pay attention to before doing nucleic acid test？

1.Try not to eat 2 hours before sampling to avoid vomiting.

2. Do not smoke, drink, drink water or chew gum 30 minutes before sampling.

3. The tester needs to wear a mask correctly and remove the mask before testing;

4. Wear it immediately after testing, and prepare a spare mask for easy replacement at any time after pollution.

5.When you feel sour and itchy in your nose or sneeze, you can immediately cover it with a paper towel or elbow.

Before collecting nasopharyngeal swabs and before being tested, the collection personnel shall be informed whether they have relevant past medical history. For example, history of nasal surgery, history of deviation of nasal septum, blood diseases, throat diseases, etc

How long will we know the pcr test results？

The test results of sampling in the morning are generally available from 18:00 to 19:00.

The detection results of afternoon sampling can generally be queried around 22:00.

What’s the difference between the PCR and antigen tests for COVID-19?

Polymerase chain reaction (PCR): PCR is the most reliable and accurate method to detect active infection. PCR tests usually give results in a few hours.

Antigen detection: detect protein fragments on the surface of covid-19. Antigen detection usually takes only 15 to 30 minutes.

How can we prevent COVID-19?

Firstly, keep good personal hygiene habits, wear masks when going out, wash hands frequently, clean the room, and wipe the floor and other furniture with disinfectant. Second, disinfect your hands with 75% alcohol every time you go out and go home, reduce the number of times you go out, and wear qualified masks. And the diet should also be light, do a good job of physical exercise and enhance personal physique.

Most importantly, if our conditions permit, we should vaccinate and conduct multiple nucleic acid tests.

If our Nasal swab pcr test results are positive,what should we do?

If our test results are positive, don’t be afraid. We should wear masks and go to the nearby Hospital for follow-up in time.

Repeat the nucleic acid test.Don’t be afraid and hide the test results. Timely medical treatment is the best choice.

Cell medical (Dongguan) Co., Ltd. is a comprehensive high-tech biotechnology company and an OEM factory of flocking swabs in China.We support custom production,our factory produces flocked swabs, pharyngeal swabs, nasal swabs, oral swabs,Rapid Antigen Test Kit, virus sampling tubes, transportation media, sample preservation solution and nucleic acid extraction kit.

Welcome to leave a message and consult us!

COVID-19 Saliva Collection Kit Instructions

Posted on 2021年9月6日2021年9月6日 by Dr. Lee

COVID-19 Saliva Collection Kit Instructions

No needles, no blood, no accompany of Doctor, no need cooling,people can self-collect their Saliva RNA sample at home and mail to Lab for PCR test.Saliva Collection kits.

What is the saliva collection kit used for?

Used for sampling, transporting and storing saliva samples.

Saliva collection kit consists of a saliva funnel (with collection tube) and a test tube with 2ml cell preservation solution. It is used to collect salivary DNA / RNA samples for virus PCR analysis. The average yield of RNA from 2ml saliva sample was 110 μ g. But the output may be 15 μ G to 300 μ G.

DNA / RNA was then isolated from human saliva samples for nucleic acid detection. Including the detection of COVID-19.

The biggest advantage of the saliva collection kit is that it is convenient and direct. Even the elderly and children can easily collect saliva into the test tube. Collecting saliva DNA / RNA samples allows direct viral PCR analysis without additional steps to process saliva collected using the saliva collection kit.

The saliva collection kit is very suitable for home and commercial use.

How to use saliva collector?

Clean the mouth:30 minutes before collecting a saliva sample, please wash away the debris in the oral cavity with absorption.

1: install the collecting funnel on the collecting pipe and spit saliva into the collecting funnel until the saliva reaches the filling line of the collecting pipe.

2: hold the collecting tube vertically with one finger and close the funnel cover with one hand.

3:Open the DNA preservation solution tube and unscrew the tube capand pour the DNA preservation solution into the salivary collector.

4: hold the collection tube vertically and rotate it gently to separate it from the collection funnel.

COVID-19 Saliva Collection Kit Instructions

5: after screwing on the cover of the acquisition tube, gently shake it for 5 seconds for detection or storage at room temperature.

Saliva collector structure

Characteristics of saliva collector

Simple: the acquisition process is simple, fast and easy to operate;

Flexible: easily collected in the laboratory, clinic and even at home;

Convenience: the collected saliva is stable, stored at room temperature and convenient for transportation;

Extensive: especially suitable for children and patients who do not meet the conditions for blood sample collection;

Safety: noninvasive sample collection to reduce the chance of infection;

High efficiency:Convenient for automatic purification. We will collect more and better quality DNA

CM’s production of millions of sampling swabs helps epidemic control

Posted on 2021年9月4日2021年9月9日 by Dr. Lee

CM’s monthly production of millions of virus sampling swabs and VTM kits helps epidemic prevention and control.

Cell medical (Dongguan) Co.,Ltd.,Referred to as cm company.

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

Under the test of COVID-19, our production Capacity improvement shows strength.

Recently, the COVID-19 variant strain has brought the global epidemic prevention and control to a severe test again. Facing the rising demand for new crown testing, Dongguan cell medical company, located in Chang’an Town, Dongguan City, Guangdong Province, is “a little busy”.

Shipment pictures of our products

In the 100000 level clean workshop, the sample preservation tubes and flocking swabs used for nucleic acid detection and sampling are continuously coming off the production lines. Several operators, dressed in white clean clothes, masks and disposable headgear, carried out production nervously and busily.

Our GMP factory from 2016

production process

Nip in the bud to prevent the novel coronavirus pneumonia, and protect the safety and health of the people. Nucleic acid detection sampling tubes and flocking swabs have also become one of the key emergency supplies for epidemic prevention and control. Cell medical (Dongguan) Co., Ltd., a comprehensive high-tech biotechnology enterprise in Guangdong Province. CM’s production of millions of sampling swabs helps epidemic control.

Cell medical (Dongguan) Co., Ltd. is a comprehensive high-tech biotechnology enterprise. We have invested a lot of scientific research strength to tackle key technical problems. At present, our virus preservation tube and flocked swab have shown an irreplaceable role in the detection of new infectious diseases.

The “disposable virus sampling tube” and flocked swab nucleic acid detection products produced by the enterprise not only support many regions in China. It is also exported to Europe, Vietnam, Indonesia, Malaysia, Canada and other countries.

After the sample preservation tube and flocked swab sampled for nucleic acid detection are carried out in turn.

The medical staff shall pack, plastic seal and pack the sampling tube to the nucleic acid detection site.

In order to better prevent SARS-CoV-2, Cell medical (Dongguan) Co.,Ltd. increases production and guarantees supply.

What is a Flocked Swab

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

what is a flocked swab

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

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

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

cm flocked swabs Display diagram

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

How are flocked swabs made?

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

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

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

Which is beneficial Faster and more efficient elution.

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

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

What is a flock nylon swab?

Nylon flocking sampling swabs are specially used for sample collection.

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

Flocked nylon swab with outstanding sample collection and release capabilities.

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

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

product features:

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

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

How do you use a Copan swab?

What are flocked swabs used for?

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

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

2. Gynecological sampling swab.

3. Virus and bacteria sampling swab.

4. Disposable DNA sampling swab.

5. Cell sampling sterile swab.

6. Laboratory test sampling swab.

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

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

Inactivation Virus transport medium

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

Inactivation Virus transport medium

purpose

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

Product specification:

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

Flocked swab+tube with Viral transport medium Multiple options

Product advantages:

Safer.

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

More stable.

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

More convenient.

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

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

Inactivated or non inactivated, how to choose?

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

producting process

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

E-mail：flockedswabs@gmail.com

What is antibody testing

Posted on 2021年8月19日2021年8月19日 by Dr. Lee

What is antibody testing

Before explaining this method, let’s first understand what antibodies are.

The rapid immunoglobulin M (IgM) test paper developed by Chinese academicians is not only a remedy for false negative sampling, but also a method for detecting antibodies.

After the virus invades the body, it likes to kill directly into the cell and hide in it to copy its offspring crazily.

Of course, before entering the cell, B lymphocytes (a kind of white blood cells) find some viruses. B cells are activated and release a large number of antibodies. These antibodies bind to the virus, make the virus lose its ability to invade, and then phagocytes destroy the virus. We call this process humoral immunity.

The antibody is fast and powerful, but the disadvantage is that it can not enter the cell to kill virus. In short, antibodies can reduce the number of viruses in body fluids and prevent more cells from being infected.

There are 5 kinds of antibodies, namely IgM, IgG, IgA, IgD and IgE, with different characteristics and specialties.

When the body is stimulated by COVID-19, IgM will appear in a week or so. Based on this, by detecting whether the IgM in the human body increases significantly, we can indirectly identify whether the human body is infected or not.

COVID-19 IgG/IgM Rapid Testing Kit SARS-CoV-2 Rapid Test IgG/IgM Rapid Test Cassette