Nasal Swab Pcr Test

Posted on 2021年11月15日2021年12月21日 by Dr. Lee

Nasal Swab Pcr Test

To do a good job of normalization prevention and control, we should accelerate the improvement of detection capacity and carry out nucleic acid and antibody detection on a large scale.

This is not only conducive to accurate prevention and control, maintaining people’s health, but also conducive to the rational flow of personnel and promoting the full resumption of work and production.

Nasopharyngeal swabs are used for nasopharyngeal sampling of respiratory diseases such as COVID-19, influenza, avian influenza and hand foot mouth disease.

For nasopharyngeal Swab Pcr Test, Pay Attention to the Following Points:

1. Please do not take antibiotics a few days before rhinitis swab Pcr Test.

2. Do not rinse your mouth with disinfectant or smear the lesion a few hours before making a nasopharyngeal swab.

3. Don’t eat, smoke or drink a few hours before making a nasopharyngeal swab.

4. If the patient’s turbinate is hypertrophic and the nasal tract is narrow, and the insertion resistance of nasopharyngeal swab is relatively large, we can’t use force rashly. We can try to use the other nasal cavity, or directly use oropharyngeal swab to collect.

5. After sampling, gloves shall be replaced, hands shall be disinfected, and disinfectant shall be sprayed on the place where the patient has touched.

In special times, you should also remember to wear a mask and do a good job in personal hygiene. Once you find a virus, please isolate it to avoid re infection.

floqswabs.

About Nylon Flocked Nasal Swab

Cell medical produces a special flocking swab for coronavirus collection, which has excellent sample collection and release ability, can quickly adsorb micro samples, and has a high release timeliness rate. The increase of the number of targets is helpful to improve the sensitivity of rapid diagnostic test.

COVID-19 nucleic acid detection is one of the criteria for the diagnosis of cases. It is the key to early detection, early diagnosis, early isolation and early treatment, as well as the basis for isolation treatment of infectious source and medical observation of close contacts.

Nasal Swab Virus Sampling Kits.

Nasal swabs PCR test process

At present, most virus nucleic acid detection kits use fluorescence quantitative PCR to determine whether the sample contains virus nucleic acid by detecting the accumulation of fluorescence signal. So, what steps do nucleic acid detection need to go through? To sum up, there are five steps: sampling, sample retention, preservation, nucleic acid extraction and computer detection.

sampling

Collect human secretions. Wipe the nasal cavity or posterior pharyngeal wall and bilateral tonsils with nasopharyngeal swab or pharyngeal swab

Sample retention

Immerse the swab head into the cell preservation solution, and tighten the tube cover immediately after breaking the tail

preservation

Put the sample tube into a sealed bag, keep it and send it for inspection in time

nucleic acid extraction

Send the sample to the laboratory for nucleic acid extraction

On machine detection

The extract was amplified by fluorescent PCR

Collection of nasopharyngeal swabs.

Nasal Swab Virus Sampling Kits.

It includes flocking nasopharyngeal swabs and virus transport medium, namely UTM swab.

Vtm Swab | Virus Transport Medium with Sampling Swab

Flocked Swab Manufacturers |Disposable Medical Nylon Sampling swab

Posted on 2021年10月23日2022年3月22日 by Dr. Lee

Flocked Swab Manufacturers |Disposable Medical Nylon Sampling swabs

Cell medical is a flocked swab and virus transport media manufacturers.

We have our own flocking production technology.

And our flocked swabs are stable and reliable performance and have excellent absorption and evolution capability.

Our company provides forensic, genetic, laboratory supplies, pharmaceutical and food safety, concentrated broth, laboratory automation and artificial intelligence.

As well as sample collection, transportation and processing products.

Now, the disposable sampling swab manufacturers will show you what a flocking swab is？

Flocked swab definition

Flocked swabs meaning

Using spray dense planting nylon fiber technology; 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.

Excellent sample collection / release ability, release rate > 90%.

Conventional flocked swab: the sample is intercepted by the gap in the fiber mass, that is, the sample is penetrated, diluted and intercepted in the fiber. The acquisition is slow and release is slower.

The sampling time of flocked swabs is 3-5 seconds, while the sampling time of cotton swab is 15-120 seconds or even longer, which causes the pressure of staff in the process of diagnosis.

Sterile flocked nylon swab with breakpoint –China swab manufacturers.

What is the breakpoint on flocked swabs?

A conventional model with 30mm, 80mm, 90mm breakpoint swab.

The swabs also feature a moulded breakpoint that allows you to safely and easily break off the swab sticks, and several breakpoint options are available for different tubes. Strong capillary hydraulics between the nylon strands draw up the maximum liquid sample.

Conventional model with 30mm, 80mm, 90mm breakpoint swab.Flocked Swab Manufacturers

Flocked swab with utm

Flocked swab+tube with Viral transport medium

General transport media for collection, transport and preservation.

COVID-19 Sample Collection and Transport kits

Posted on 2021年9月24日2021年12月21日 by Dr. Lee

COVID-19 Sample Collection and Transport kits

Since the outbreak of the new crown, we have received many customer queries about which types of swabs, media and kits can be used for sample collection and transportation of COVID-19.

Cell medical (Dongguan) Co., Ltd. produce flocked swabs, VTM kits, virus transport medium, with multiple automatic production lines.

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

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

Our VTM kits are manufactured in accordance with CDC and FDA guidelines.

Now let’s learn about sample collection and transport kits.

COVID-19 Sample Collection and Transport kits

How do we collect COVID-19 samples?

Specimen collection requirements

Personal protective equipment (PPE) requirements for sampling personnel: N95 and above protective masks, goggles, one-piece protective clothing, double-layer latex gloves and waterproof boots; In case of contact with the patient’s blood, body fluids, secretions or excreta, replace the outer latex gloves in time.

Specimen type

1. Upper respiratory tract specimens: including pharyngeal swab, nasal swab, nasopharyngeal extract, etc.

2. Lower respiratory tract specimens

3. Stool samples: Patients with diarrhea symptoms need to collect stool samples.

Specimen collection method

Sampling flocked swab_Sample Collection

1. Pharyngeal swab: wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with 2 plastic rod swabs planted with pile at the same time, immerse the swab head into a tube containing 3ml virus preservation solution (isotonic salt solution, tissue culture solution or phosphate buffer can also be used), discard the tail, and tighten the tube cover.

2. Nasal swab: gently insert a plastic rod swab with a flocking nylon faucet 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 in the same way. Immerse the above two swabs into the same tube containing 3ml sampling solution, discard the tail, and tighten the tube cover.

What kind of Media do you use to transport specimens?

Since the outbreak of COVID-19, the Virus Transport Medium has played a major role. Sample and nasal swabs are used to protect samples in the sample tube with virus preservation, which improves the accuracy of detection. Virus preservation solution is a solution for virus sampling, preservation and detection. What kinds of virus preservation solution are added to the virus sampling tube?

virus transport medium

There are two types of virus preservation transport Media: inactivated and non inactivated.

The following briefly introduces several principles for the selection of virus preservation solution.

Non inactivated virus transport medium:

The non inactivated type does not contain lysate.

On the basis of Hank’s, BSA (bovine serum albumin) amino acids, vitamins and other nutrients required by the virus are added, which can maintain the activity of the virus in a wide temperature range and maintain the originality of the sample to the greatest extent.

For nucleic acid extraction and detection of the virus, virus culture and separation.

Characteristics of non inactivated preservation solution:

COVID-19 Sample Collection and Transport kits Use process

1. It can maintain virus activity for detection or virus isolation;

2. It has no inhibitory effect on subsequent nucleic acid amplification;

3. stored in cold storage(at 2 ℃ ~ 8 ℃ ).

Inactivation virus transport medium:

Inactivation preservation solution can inactivate the virus in the sample by fully mixing the collected sample with virus lysate and virus nucleic acid preservation solution, and effectively ensure the integrity of virus nucleic acid in the sample.

About the preserved viral RNA samples: used in gene detection, enzyme-linked immunosorbent assay (ELISA), PCR detection and so on.

Inactivation preservation solution includes guanidine salt containing and guanidine salt free.

1. Guanidine salt

(1) Instantly cleaved and inactivated to reduce the risk of sampling;

(2) Stored stably at room temperature for 2 weeks;

(3) It can match most nucleic acid extraction reagents.

2. Non refined salt

(1) Inactivated instantaneously to reduce the virus sampling risk, and the virus may recover its infectivity after dilution;

(2) Stored stably at room temperature for 2 weeks;

(3) It can match most nucleic acid extraction reagents.

3. Direct expansion preservation solution

(1)Inactivated instantaneously to reduce the virus sampling risk, and the virus may recover its infectivity after dilution;

(2)Stored stably in cold storage for 24-48 hours;

(3) Directly added to the nucleic acid amplification system as a template;

(4) Match most nucleic acid extraction reagents and nucleic acid release agents.

VTM viral transport medium tube

Posted on 2021年8月30日2022年3月22日 by Dr. Lee

VTM viral transport medium tube_virus sampling tube-universal transport medium

1.[information]

1. Common name: disposable virus sampling tube.

2. Product Name: universal transport medium.

3. Specifications and models vtm-a-cm and vtm-b-cm series.

2.[package specification]

20 copies / box.

VTM viral transport medium tube-disposable sampling kits

3.[VTM use]

For sample collection, transportation and storage.

4.[viral transport medium tube test principle]

On the basis of Hank’s, potassium chloride, magnesium chloride and calcium chloride are added to provide necessary nutrient ions for pathogenic bacteria to make it more specific. The preservation time is longer, the integrity of pathogenic bacteria morphology is preserved to a greater extent, and the extraction rate of pathogenic bacteria is improved.

5. [structure composition ]

flocked swab and virus transport medium.(or universal transport medium).

6. [sample requirements]

the collected samples shall be sent to the laboratory within 48 hours at 2-8 ℃. If they cannot be sent to the laboratory within 48 hours, they shall be stored at – 70 ℃ or below. The samples shall be inoculated and separated as soon as possible after being sent to the laboratory.

7.[storage conditions and validity period]

1. The products shall be stored in a clean, hygienic, dry and ventilated environment;

2. The temperature is 5 ℃ ~ 35 ℃. 3. Relative humidity ＜ 85% RH. 4. Product shelf life: 12 months.

universal transport medium and flocked swabs

8.[usage]

Firstly,before sampling, mark relevant information on the label of the sampling tube.

Secondly,use the corresponding sampling flocked cotton swab for sampling.

Then,after sampling, quickly put the cotton swab into the sampling tube, break the part higher than the sampling tube, and tighten the tube cover.

Finally,see the following for specific sampling methods.

a)Nasal swab: gently insert the sampling head into the nasopalatine part of the nasal catheter, stay for a moment, and then rotate it slowly to exit. Immerse the collected specimen into the liquid in the sampling tube, break the excess part and discard it, and tighten the sampling tube cover.

b) Pharyngeal swab: wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with sampling head. Soak the collected specimen in the sampling solution, break the excess part, discard it, and tighten the sampling tube cover.

9.[precautions]

1. After collecting pathogenic bacteria samples, we should completely insert the disposable sampling flocked cotton swab into the preservation solution to retain pathogenic bacteria to the greatest extent.

2. The collected samples must be fresh and sent for examination in time to avoid the death of pathogenic bacteria.

3. Forbidden to use products with damaged packaging and expiration date to prevent pollution.

Note: For in vitro diagnosis. For virus sampling, transportation and storage.Including COVID-19.

Food can lead to serious events; It has certain irritation to eyes and skin. If it accidentally splashes into eyes, rinse with clean water.

10.[Manufacturer information]-VTM virus sampling tube kits

[name of manufacturer] cell medical (Dongguan) Co, Ltd .

[address] No. 98, Wusha street, Chang’an Town, Dongguan City, Guangdong Province, China .

[E-mail]：flockedswabs@gmail.com

CM company take you to know the virus sample preservation solution.

Posted on 2021年8月28日2022年3月22日 by Dr. Lee

Cell medical (Dongguan) Co, Ltd.,Take you to know the virus sample preservation solution.

Virus sample preservation solution,also known as disposable virus sampling tube.When we first came into contact with this term, we must be very curious.

However,what is DNA / RNA virus sampling tube？

First of all, virus sampling tube is a liquid that protects the tested substance of the virus by immersing the sampling swab virus sample in the sampling tube. Currently, it is mainly used for the collection, storage and transportation of common virus samples such as COVID-19, HFMV and so on. Medical workers can take tissue samples from the throat or specific areas using throat swabs and nasal flocked swabs. Samplers then store the samples for subsequent clinical trials such as nucleic acid extraction or purification. The virus and related samples can be stored at -70℃ or liquid nitrogen for a long time.

Usually,we divide the virus storage solution into two kinds. the non-inactivated virus storage solution and the inactivated virus sampling tube. The non inactivated type can protect viral proteins and nucleic acids. Maintain virus activity and facilitate culture and detection. Although the inactivated type can make the virus no longer have physiological activity, lose infectivity and pathogenicity, and have the ability to reproduce. Inactivate the virus, eliminate secondary infection,and protect the safety of transportation and testing personnel.

disposable virus sampling tube

About inactivated sample preservation solution.

There may be a small partner who will question whether the inactivated type will inactivate the virus? How do you check it? Don’t worry, the purpose of using inactivated virus sampling tube is to lyse nucleic acid and detect nucleic acid by subsequent RT-PCR.

After extraction with most commercial kits, the quality of DNA or RNA obtained is good and the yield is high. So,it can complete various gene detection and analysis experiments, such as PCR or qPCR, and save transportation costs.

It is suitable for COVID-19, hfmv and other common virus samples.

About inactivated sample preservation solution.

The virus preserved in non inactivated virus sampling tube has better integrity and higher detection rate. Researchers use it for scientific research, including nucleic acid testing.
Cryogenic storage without freezing, does not destroy the virus shell, easy long-distance transportation;
Application:H1N1 influenza virus and any other Virus swab sampling;
The antibiotics in the preservation liquid can effectively prevent bacterial and fungal infection;

Contact us

Virus sampling tube manufacturer

Posted on 2021年8月24日2022年3月22日 by Dr. Lee

Disposable virus sampling tube is an important link in virus detection. Our company produces inactivated and non inactivated virus sampling tubes for selection. At present, the commonly used ones are inactivated. Because the inactivated disposable virus sampling tube is sterile, it can better meet the detection needs. Our company produces a complete range of products, including 2ml, 5ml and 10ml. The products sold can be sold alone or together with flocked swabs. That is, double swab virus sampling tube and single swab virus sampling tube_VTM kits.

Product application

Disposable virus sampling tube is a complete set of centrifugal tube for sampling and transportation in microbial sampling, also known as specimen transportation tube. For covid-19, influenza virus, hand, foot and mouth virus sampling.

Manufacturer of disposable virus sampling tube

Cell medical (Dongguan) Co, Ltd. has a sound R & D and production team with good reputation and high sales. The product is suitable for all kinds of medical units. Welcome to consult and buy. The disposable virus sampling tube produced by our company has complete specifications and great price preference. Welcome to call for details.

Product advantages

Flexible combination: the number and type of swabs and sampling tubes can be matched arbitrarily.

Widely used: it can be used for collection, transportation and storage of specimens such as New Coronavirus, respiratory virus and hand foot mouth virus.

Excellent quality: after verification, the virus can still be detected after being stored in the preservation solution at room temperature for 7 days.

Easy to distinguish: both inactivated and non inactivated preservation solutions are pink, which can effectively avoid confusion of sample addition.

After sampling, the virus and related samples shall be stored and transported within 48 hours under refrigeration (2 ~ 8 ℃). If it needs to be stored for a longer time, please put it at – 70 ℃.