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Nasal Swab VS Oral Swab

Posted on 2021年11月22日2022年3月22日 by Dr. Lee

Some customers inquire:

Are nucleic acid tests all about poking the throat?

Will you poke your nose?

“Poke the nose” through the Internet is more accurate,

is that true?

Don’t panic, let’s learn about it with Xiao Liu from Cell medical!

When doing nucleic acid testing,
There is a very important project,
Just do a throat swab
There are two types of throat swabs-nasopharyngeal swab and oropharyngeal swab sampling.

Currently
Most hospitals use
Oropharyngeal flocked swab
Because-it is the most convenient to collect samples and less painful.

But there are rumors,
The detection rate of nasopharyngeal swabs is higher,
is that true?
Yes! Yes! Yes!
Studies have shown that the poison load of nasopharyngeal swabs in patients infected with the new coronavirus is much greater than that of oropharyngeal swabs.

Focus on:
Wear a mask when you go out!
Wear a mask when you go out!
Wear a mask when you go out!

The important thing is said three times!

Nucleic acid detection, antibody detection

confuse?

After the new coronavirus infects the human body, it will first reproduce in the respiratory system. Therefore, it can be determined whether the human body is infected with the virus by detecting the viral nucleic acid in the sputum and nasopharyngeal swabs.
To
After a period of infection, usually 7-10 days, the human body will produce specific antibodies against the virus. IgM antibodies will appear first, and then IgG antibodies will appear. Therefore, detecting these specific antibodies can determine whether the human body has been infected with the virus. ,

If allowed,

You can, according to your own tolerance,

Choose whether to do a nasopharyngeal swab or an oropharyngeal swab.

in addition,

The serum antibody test is to draw venous blood,

No need to fast!

Flocked Swabs for Sample Collection

Posted on 2021年11月20日2022年3月22日 by Dr. Lee

Flocked swabs for sample collection

The flocked swab deposits nylon fibers on the surface of the medical ABS rod in order in a certain direction through the electrostatic field to form a brush layer. The layers are fully parallel and perpendicular to the surface of the internal rod.

The brush head can be used for Virus cell collection.

It can be used for sampling the natural cavities of the human body such as oral cavity, nasopharynx and laboratory detection.

flocked swabs for sample collection

Why flocked swabs?

The flocking swab deposits nylon fibers on the surface of the medical ABS rod in order in a certain direction through the electrostatic field to form a brush layer. The layers are fully parallel and perpendicular to the surface of the internal rod. The brush head can be used for DNA collection. It can be used for sampling the natural cavities of the human body such as oral cavity, nasopharynx and laboratory detection.

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

And the sampling sample will not be dispersed and retained in the fiber, which is conducive to faster and more efficient elution.

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

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

Nasopharyngeal flocked swab;

Flocked swabs have some advantages;

1. Sampling is comfortable and easy to use;

Flocking swabs now basically use “spray technology”, which vertically attaches millions of nylon fibers to the head of medical ABS swab rod through the flocking process of electrostatic charge.

The function of the vertical nylon fiber is similar to that of a soft brush. The use of this soft brush in the sampling process makes the user feel free of foreign objects. At the same time, the flocking swabs used in different parts adopt different breaking points, and the rod adopts different thickness to make the softness different.

For example, the nose swab is thinner and softer at the upper end of the rod, and the breaking point is longer, which fully conforms to ergonomics.

2. Flocked swab samples release more;

The capillary action between nylon fiber bundles promotes the strong hydraulic absorption of liquid samples. The sample is kept on the surface to make elution easier. It is much larger than the traditional winding cotton swab. The experimental research shows that the collection and release of flocking swab can reach 95% of the sample, while the cotton swab is only about 20%.

Because most of the samples collected by the cotton swab are easy to be intercepted in the fiber matrix layer of the head during release, it is not easy to release or release a small amount.

3. Flocking swab has biocompatibility and is an ideal choice for PCR;

In order to limit the damage to the sample and improve the accuracy of detection, while the flocking swab is PCR compatible and does not contain RNase and DNase.

Operation method of flocked nylon swab:

Take the sampling method of oropharyngeal swab as an example;

1. First, ask the patient to sit down, then let the patient tilt his head back, open his mouth, and make an “ah ~” sound.

2. The sampler fixed the patient’s tongue with a tongue depressor, and used a flocking swab to cross the root of the tongue to the posterior pharyngeal wall, tonsil recess, lateral wall, etc.

3. Wipe repeatedly for 3 ~ 5 times to collect mucosal cells.

4. Slowly take the swab out of the mouth, vertically put it into the virus preservation solution, break the tail of the swab, and tighten the sampling tube to avoid leakage.

5. Send to the laboratory for testing as soon as possible.

Swab flocked matters needing attention:

1. The swab shall be placed vertically in the sampling tube, and shall not be wiped to the bottle mouth to avoid pollution.Viral Transport Medium.flocked swab copan.

2. It is best to send it or send it to the laboratory for inspection on the day of sampling.

3. Before submission for examination, it must be verified that the specimen is consistent with the submission form. The appearance of the sampling tube must clearly write the patient’s name and basic information.

4. The submitted samples must submit (or submit the electronic version in advance) screening information form, inspection form and other materials.

Viral Transport Kits | Viral Transport Medium | VTM Kit

Posted on 2021年11月16日2021年11月16日 by Dr. Lee

Viral Transport Kits | Viral Transport Medium | VTM Kit

Winter is coming, the cold current is coming, the goose feather like snow is flying all over the sky, and the whole world is wearing a white coat.

Many customers once again throw this “soul question” to us. “Can your Viral Transport Kits adapt to the cold environment?”

He answer is yes. Let’s follow Cell medical Dr. Li for experimental verification!

Experimental purpose

Verify that the Viral Transport Medium of cell medical (Dongguan) Co., Ltd. has no significant impact on its service performance after low-temperature freezing and thawing.

Experimental scheme

Simulate the process of low-temperature freezing during transportation, place the sampling tube in a low-temperature environment for 24 hours, and then melt at room temperature. The sampling tube products stored normally without freezing and thawing were used as the control. Each group was added with virus mixture, stored at 4 ℃ for 24 hours, and then bathed in water at 56 ℃ for 30 minutes for nucleic acid extraction and nucleic acid detection. Set 2 repetitions for each group.

1. Low temperature icing simulation: set two low temperature gradients and place the sampling tube in two low temperature environments of – 20 ℃ and – 80 ℃ respectively.

2. Mixing of virus solution: We used two different concentrations of virus solutions, representing high and low concentration gradients respectively. The copy numbers of virus solution were 106 copies / ml and 104 copies / ml, respectively. Simulate the actual sampling process, add the virus solution in the volume ratio of 1:10 to the sampling solution, and the virus solution is 100 μ 50. 1ml of sampling solution and add 100 ml to it μ L of oral liquid.

3. After mixing each group, place it in 4 ℃ environment for 24 hours and inactivate it in 56 ℃ water bath for 30 minutes.

4. Extract the nucleic acid of each group of virus, and detect the virus content of each group by RT qPCR. The CT value is used as the basis for result evaluation. The higher the CT value, the higher the detected concentration.

5. The experimental groups are as follows:

Main experimental materials

Sampling solution: virus preservation solution produced by cell medical (Dongguan) Co., Ltd.
virus diluent: the virus isolation serum-free medium of Cell medical was used for gradient dilution.
virus for verification: porcine epidemic diarrhea virus. Its structure and genome size are similar to those of New Coronavirus.
nucleic acid extraction reagent: non cleavage nucleic acid extraction reagent (magnetic bead method).

Viral Transport Kits Experimental results.

1. Product appearance.

the color is consistent without precipitation.

2. Performance evaluation results

amplification curve.

A. amplification curve of each experimental group and negative control group:

The groups with earlier peaks are the amplification curves of high concentration groups, and the groups with later peaks are the amplification curves of low concentration groups.

Empirical conclusion.

The Viral Transport Medium products of Cell medical (Dongguan) Co. ,Ltd. will not affect its service performance after one-time freezing and thawing.

And can fully meet the requirements of low-temperature transportation and low-temperature preservation of virus samples.

Viral Transport Kits:composed of flocked swabs and test tubes with Viral Transport Medium(VTM)

Covid Rapid Test Kit

Posted on 2021年11月12日2022年3月22日 by Dr. Lee

Covid Rapid Test Kit

Good news, recently, Health Canada approved covid-19 rapid test equipment. From now on, this equipment can be used for virus testing all over Canada, and the results can be obtained in 15 minutes at the fastest!

The number of outbreaks in Canada has soared, and the pressure of virus testing has also soared! Ontario and other places once had to queue up for more than 4 hours to wait for virus testing.

This will help alleviate the increasing number of confirmed cases and the need for virus testing. Best of all, the rapid test device can be managed by trained professionals in pharmacies and other places, without having to test the results through the laboratory.

About Antigen self test kit.

Antigen self test kit sampling process-Covid Rapid Test Kit

At present, most covid virus tests in Canada are carried out in public health clinics, and then the samples are sent to the laboratory for analysis.

This process may take several days.

Bcause some cities are facing the situation that testing centers queue up for hours.

How much do you know about COVID-19 antigen detection technology?

In late spring and summer of 2020, the COVID-19 epidemic was initially resurgent beyond all expectations, and unexpectedly came back with a strong attitude.

“COVID-19” On August 26, 2020, in order to control the spread of the epidemic.Abbottswab.

In addition, the federal government will spend $760 million to buy 150 million copies of reagents and transport them to nursing homes and schools in about a month.

Antigen detection.

By the end of October 2020, with more similar tests under way and waiting for emergency approval.

Three more antigen test kits have obtained the emergency use authorization (EUA) of the US Food and Drug Administration (US FDA), and the total number has reached 7.

In addition, although the World Health Organization was unwilling to do so at first.

It also approved the use of two antigen detection kits following the emergency authorization of the U.S. Food and Drug Administration in September and October 2020.

In the invention and transformation caused by covid-19 pandemic, detection technology has become a hot spot of biotechnology and engineering innovation.

In addition, more extensive measures such as wearing masks, maintaining social distance, isolating and tracking contacts.

And faster and cheaper screening tests provided by Cell medical provide hope for people’s urgent need to combat this infectious disease and make progress.

Many places in the world that seemed to have controlled the epidemic in the early stage broke out again.

Which shocked public health experts and called on everyone to carry out rapid and frequent testing.

Covid 19 self test rapid antigen test.

According to a report recently released by the Rockefeller Foundation.

If only to meet the testing needs of primary and secondary schools and nursing homes.

The United States should complete 200 million rapid tests per month by January 2021.

Although people tend to detect with higher accuracy, antigen detection with accuracy of only 70% .

People can also find infected persons omitted from previous tests through frequent detection. And provide sufficient accuracy for continuous screening.

According to Mara g. Aspinall, a practical professor and medical diagnostic expert at Arizona State University (ASU) in Tempe.

The co-author of the report, the number of tests required to screen the entire U.S. population may be twice that required by schools.

“Now it’s time,” Aspinall said. “We have an agreement and testing reagents. I hope the community can reduce the spread of the virus and control the epidemic again.”

All about the Nasal Swab

Posted on 2021年11月11日2021年12月27日 by Dr. Lee

All about the Nasal Swab

Nasal Swab:nasopharyngeal np swab.

The specimens collected from nucleic acid samples are mainly pharyngeal swabs, which are divided into “nasopharyngeal swabs” and “oropharyngeal swabs“.

Nasopharynx swab and oropharyngeal swab only have different sampling paths. Oropharyngeal swab is to collect oropharyngeal specimens by entering the sampling swab through the mouth, and nasopharyngeal swab is to collect nasopharyngeal specimens through the nose.

How to do a nasopharyngeal swab?

A man was doing a nasopharyngeal swab sample

Nasopharyngeal swab sampling method.

Hold a swab close to the nostril to enter, and slowly go deep along the bottom of the lower nasal tract.

Since the nasal tract is curved, do not use too much force to avoid trauma and bleeding.

When the top of the swab reaches the posterior wall of the nasopharyngeal cavity, rotate it gently for one week (stay for a moment in case of reflex cough), then slowly take out the swab and immerse the swab head into a tube containing 2 ~ 3ml virus preservation solution.

About Nasal swab sample collection.

How to take a swab sample?

Ask the patient to take off the mask and blow his nose with a paper towel to remove excess secretions from the nasal cavity. Remove the swab from the package.

Tilt the patient’s head back slightly to make the nasal passage easier to pass through. Ask the patient to close their eyes to reduce the mild discomfort of the operation.

Gently insert the swab over the bottom of the nasal canal along the nasal septum until the nasopharynx stops when resistance is felt.

Insert the cotton swab parallel to the upper jaw into the nostril.

If you feel resistance when passing, step back and try to reinsert it at another angle to bring it closer to the bottom of the nasal canal.

The depth of the swab should be equal to the distance from the nostril to the opening outside the ear.

CDC recommends placing the swab for a few seconds to absorb enough secretions, and then slowly removing it while rotating the swab.

Some organizations may also recommend rotating the cotton swab several times before taking it out.

After removal, ask the patient to put on the mask again.

Specimen processing

Open the virus transport medium and insert the swab into the collection tube.

Break the swab at the groove and discard the remaining part. Seal the labeled collection tube and place it in the biohazard garbage bag.

According to convention, you can return the sample to its original packaging for disposal.

Follow CDC instructions for direct treatment of swab specimens or place swabs in medium with or without refrigeration.

Nasal swab test swab material.

Nylon flocked swab—the most widely used sampling swab material at present

Cell medical flocked swabs,floqswabs.

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

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

Our flocked swabs are exported to England,America.Canada,Russia,Egypt,Greece,France,Germany,Japan Japan,Australia,Brazil,China nasal swabing. Argentina,Columbia,Iraq,Denmark,Philippines,Norway,Switzerland,Cambodia,Burma.Portugal. Pakistan.Bangladesh.romania.Malaysia flocked swab.Maldives.Afghanistan.Iceland.Ireland.

Nasopharyngeal swab near me

flocked swab application

Flocked Nylon Swabs and Non-Flocked Rayon Swabs

Posted on 2021年11月11日2021年12月21日 by Dr. Lee

Flocked Nylon Swabs and Non-Flocked Rayon Swabs

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

Type of sampling swab.

1. Polyester fiber, polyester or rayon head, plastic or aluminum handle swab: it is suitable for the collection of virological test specimens. Swabs with wooden handles should not be used for the collection of virological test specimens.

2. Cotton swab: it is suitable for the collection of vaginal, cervical and urethral samples for Mycoplasma test, but not for the collection of bacteria (especially caustic bacteria) and Chlamydia test samples.

3. Polyester swab: suitable for sampling virus and bacterial samples.

4. Flocked swabs: made of nylon fibers by proprietary spray technology, suitable for sampling respiratory viruses and fungal culture samples.

5. Calcium alginate swab: it should be used for the collection of Chlamydia and botulinum pertussis nasopharynx swab. However, it is not suitable for the sampling of lipid coated virus and cell culture, Neisseria gonorrhoeae and Ureaplasma urealyticum.

Specimen Collection Swab.

Why choose flocked material as sampling swab material? What are its characteristics？

The unique test substrate greatly improves the yield of DNA;

Adult oral SWAB piece 1 to 10 μ g DNA;

It is a good alternative to blood collection;

Both human and animal can use it;

Simple and fast operation;

There are two types of single and double disinfection packaging to choose from;

application;

Genotype study;

Veterinary genotyping and diagnosis;

Parent child and genetic services;

Forensic and DNA population studies;

Quick covid test |How does covid testing work?

Posted on 2021年11月10日2021年11月10日 by Dr. Lee

A new covid test at home has been authorized by the U.S. Food and Drug Administration (FDA) for emergency use (EUA).

Here’s what you need to know about testing at home.

How can I get quick covid test?

Cell medical’s covid test at home now has a prescription, which means Americans can get one from their health care provider.

If doctors suspect that their patient is infected with covid – 19 within the first six days of symptom onset, they can prescribe a rapid test.

Quick covid test Rapid Antigen Test Kit Nasal Saliva Test at home

How much does it cost?

Please contact us for more details.

E-mail：flockedswabs@gmail.com

How does testing work?

Rapid Antigen Test is a lateral flow test, a portable covid test that usually returns results faster than the widely used laboratory based PCR test.

It works by detecting nasal swab samples and provides positive or negative results within 10 minutes. The results appear on test strips exposed to nasal swab samples.

The FDA said flocked swab can be collected from people aged 8 and over, but if the tested children are less than 14 years old, it should be collected by adults.

How accurate is the test?

Cell medical claimed that the time when the positive results of the test matched the PCR test was 84.8%, and the negative results matched the PCR test were 99.1%.

FDA said that the negative test results of covid test do not necessarily exclude the possibility of covid – 19 infection.

“and should not be used as the only basis for treatment or patient management decisions, including infection control decisions.

“People who are negative and continue to experience COVID 19, have a fever, cough and / or shortness of breath, may still have SARS – CoV – 2 infection. Follow up care should be sought from doctors or medical staff. ”

Not all side flow tests require the use of prescriptions. On December 15, the FDA issued the EUA for the first outside counter flow covid test at home.

The covid – 19 family test also uses nasal swab samples to detect covid infection and works with people aged 2 years and older.

The FDA said that in the population with covid symptoms, the ellume test correctly identified 96% of positive samples and 100% of negative samples. In the population without symptoms, it collected 91% of positive samples and 96% of negative samples.

Similarly, the FDA said that the negative results of the test do not necessarily exclude the possibility of covid infection.

Broader prospects

According to CDC data, as of Monday, the United States had reported 47.5million cases of covid and 778,316 deaths.

The data also showed that 432 million people were vaccinated on Monday.

A stock photo shows a schoolgirl receiving a nasal swab sample.

The covid test uses self collected swab samples.

But adults should take samples from children under the age of 14 and over the age of 8.

Nasal swab quick covid test.

Flocked Dacron Swabs

Posted on 2021年11月5日2022年3月22日 by Dr. Lee

Flocked Dacron Swabs

Manufacture Sell Nasopharyngeal Nasal Oral Medical Sterile Flocked Collection Testing dacron swab.

The flocked sampling swabs usually apply asterile dacron or rayon swab with a flexible, plastic shaft that can be easily cut off after thesampling of specimens and put into thetransportation storage tube for storage. Thematerial from the flocked swabs is dispersed into the liquid medium.

Which is better, Tradition swab or flocked swab?

Dacron swab and PBS are acceptable alternatives to flocked swab and viral transport media for SARS-CoV-2 Nasopharyngeal flocked swabs placed in viral transport media (VTM) are the preferred collection methodology for respiratory virus testing.

Looking for more?Flocked swabs definition Here.

Flocked Dacron Swabs-Nasopharyngeal Swab

Specification

Material	nylon fibers+medical grade ABS stick
Length	150mm
Breakpoint Length from tip	80mm or 30mm
Handle dia.	1.8-2.5mm
Flocked tip	25mm
OEM/ODM	Available
Sample time	3days
Delivery time	20days
Certificate	CE&ISO13485

1. Sampling is more comfortable and convenient.

Our company uses the existing technology “spraying technology” to vertically attach millions of nylon flocked micro fibers to the head of medical grade handle through the flocking process of electrostatic charge. The function of vertical nylon fiber is similar to that of soft brush. Using this soft brush in the sampling process makes the user feel no foreign matter. At the same time, the flocking swabs used in different parts adopt different breaking points, and the rod adopts different thickness to make the softness different.

For example, nasal swab, its upper end of the rod is thinner and softer, and its breaking point is longer.

Sterile Flocked Nylon Swab with 80mm Breakpoint.

2. Flocking swab samples release more.

The capillary action between nylon fiber bundles promotes the strong hydraulic absorption of liquid samples. The sample remains on the surface to make elution easier. In the traditional cotton swab, most of the samples collected are still captured in the fiber matrix of the head, which is not easy to release or the release amount is small. Flocked swabs have been shown to release up to 95% of the sample, compared with 25% for standard fiber pointed swabs. If the sample size is particularly small, the use of flocking swabs is particularly important.

3. Flocking swab has biocompatibility and is an ideal choice for PCR.

In order to limit the damage to the sample and improve the accuracy of detection, disposable sampling swab is made of better quality nylon flocking swab.

This makes flocking swabs an ideal choice for PCR Swab Test. Therefore, for scientists using PCR technology, the new flocking swab is PCR compatible and does not contain RNase and DNase.

How are flocked swabs used for specimen collection swab?

Our flocked swabs feature perpendicular nylon fibers that optimize specimencollection and elution into transport media. The swabs also feature a moldedbreakpoint that allows you to safely and easily break off the swabstick, and severalbreakpoint options are available for different tubes.

Packaging & Delivery

Selling Units:: Single item

Single package size:: 16X1.5X0.5 cm

Single gross weight:: 0.005 kg

Package Type:

100pcs/bag,10000pcs/ctn,ctn size:60*40*48cm,10kg/ctn.

Lead Time:

Quantity(Pieces)	1 – 10000	>10000
Est. Time(days)	15	To be negotiated

What elements should a good sampling swab meet？

Posted on 2021年11月4日2021年11月4日 by Dr. Lee

What elements should a good sampling swab meet？

2021-11-04

In the collection of virus samples, small sampling swabs are always ignored, and people often ignore the judgment of its quality. However, the sampling swab is the “vanguard” in the whole nucleic acid detection process. It is the first area to contact the virus. It can be said that it controls the “lifeblood” of the whole nucleic acid detection process.

sampling swab-flocked swab

Cell medical (Dongguan) believes that a good sampling swab should have three elements——

1: more samples. That is, the virus samples collected by the sampling swab should be as many as possible.

2: release more. That is, the virus samples collected by the sampling swab should be released into the sampling solution as much as possible.

3: excellent design. That is, the design of sampling swab shall not interfere with the nucleic acid detection in the last link.

It is well known that after large-scale nucleic acid screening, the previously commonly used winding swabs were eliminated, and flocking swabs that are easier to collect release samples were used.

However, it is not enough to unify the material.

The design of flocking swab is also very exquisite in structure.

Different nylon fiber arrangement and density determine the difference of sample collection and release.

A good swab can avoid missing inspection to a greater extent.

UTM Tube with NP Flocked Flexible Swab

Posted on 2021年11月3日2022年3月22日 by Dr. Lee

UTM Tube with NP Flocked Flexible Swab

Whether nucleic acid detection or virus detection.

Universal Transport Medium (UTM) and NP Flocked Flexible Swab sampling swab play a great role.

NP Flocked Flexible Swab : Used to collect virus samples.Nasopharyngeal sample.

While virus preservation solution plays the role of preserving these virus samples.

which not only ensures the integrity of nucleic acid virus, but also facilitates the later detection accuracy.

How many Universal Transport Medium are there? What are the functions and differences?

At present, there are two kinds of Universal Transport Medium on the market, namely inactivated virus preservation solution and non inactivated virus preservation solution.

Inactivated Virus Transport Medium :Use to lyse and inactivate the virus.

It can protect the tester from the second infection of the virus.

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

The purpose of non inactivated virus preservation solution is to retain the protein shell of the virus and the nucleic acid DNA or RNA of the virus, so as to ensure the integrity of the nucleic acid of the virus sample in the process of submission for inspection.

Although there will be a certain infectious risk in case of misoperation, this preservation solution maintains the originality of the virus sample to the greatest extent and is a cultured virus transport medium.

Noted:long-term storage requires strict low-temperature storage after sampling.

Relatively speaking, the non inactivated virus preservation solution has higher requirements for the laboratory, higher sensitivity and more applications. But it is relatively easy to be infected.

As long as there are no problems in sampling and detection operations, there will be no risk problems.

How to select inactivated and non inactivated virus preservation solutions cannot be generalized, We should choose according to different needs, and the price determines the quality.

Don’t be greedy for small things and lose big ones.

About NP Flocked Flexible Swab

Features of Flocked Swab