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Covid Test Throat Swab

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

There is more than one sampling method to detect covid-19. Everyone should have heard of the nasopharyngeal swab test and oropharyngeal swab. Can you do it yourself? Or does it have to be done by a professional for you?

In this article you will learn:

What difference is between a nasal swab and a throat swab COVID-19 test?

The main steps to take the Covid Test Throat Swab test.

Which COVID test is more accurate, nasal or throat swab?

What difference is between a nasal swab and a throat swab COVID-19 test?

Swab Test

Sampling methods and location are different.

The accuracy rates of nucleic acid detection nasal swabs and throat swabs are usually similar, and the main difference lies in the sampling method and sampling site.

For nasal swabs, nasopharyngeal flocking swabs are mainly used to test the secretions from the inside of the nasal cavity and the surface of the nasal mucosa through the nasal cavity; In contrast, throat swabs are obtained by dipping pharyngeal specimens through the oral cavity. Tests are conducted to determine if the sampler is infected with the new coronavirus.

There are several different ways to test for COVID-19:

Testing for COVID-19 falls into two main categories:

1. Diagnostic test/diagnostic test: to detect whether you are currently infected with SARS-CoV-2 virus, also called viral swab test.

2. Antibody test/antibody test: It is used to detect whether you have been infected with the SARS-CoV-2 virus, and cannot be used to diagnose whether you are currently infected.

Polymerase chain reaction (PCR) swab test

Nasal Swab A nasal swab is a method of examining the nasal passages to see if there is a bacterial or viral infection. The nasal swab is something similar to a sterile flocked swab, which is used for the collection of nasal specimens.
Throat swab, also known as “oropharyngeal swab“, refers to using a sterilized medical long cotton swab to wipe a small number of secretions from the throat of the person to be tested, and then perform respiratory virus testing. A sample is taken from the back of the throat through the mouth.
Nasopharyngeal swabs are actually relatively long nasopharyngeal flocked swabs, similar to longer sterilized cotton swabs.
Its main function is to take nasopharyngeal secretions for bacterial culture and drug sensitivity tests. Go deep into the nose and collect a sample from the back of the nose or the back of the throat.
Saliva swabs use a saliva sample to test for the COVID-19 virus. This is usually done by swabbing the oral area, such as the cheeks.

The rapid antigen tests that most people use in the U.S. and elsewhere are designed specifically for nasal swabs.

The main steps to take the Covid Test Throat Swab test.

Specimen collection crowd:

1. Patients with suspected pneumonia and suspected cluster cases of new coronavirus infection;

2. Others who need to be diagnosed or differentially diagnosed with new coronavirus infection;

3. Those returning to the city/returning to work without obvious symptoms (fever, respiratory symptoms) .

Before swab test sampling:

Preparation before throat swab: throat swab sampling tube (tube + swab), sealing bag with a size suitable for displaying the general biological hazard sign, tongue depressor, etc.

Check the label on the outside of the throat swab (whether there is a date, specification, whether the colour of the sampling liquid has deteriorated, whether it is turbid, whether there is sediment, etc., and also improve the information of the sampling tube, such as name, sampling unit, and paste the sampling number);

It is necessary to communicate with the examinee first, and inform the examinee in advance not to smoke, drink, or eat chewing gum or irritating or savoury food within 30 minutes before sampling.

If your test needs to try:

The swab crossed the base of the tongue and reached the pharyngeal stenosis, and quickly wiped the palatine arches and pharynx and tonsil secretions on both sides.
Drop the swab into the virus delivery medium, assist the cap to break the swab stem so that it is fully seated in the tube.
Tighten the cap of the tube, mark it well, put it in a plastic bag and seal it.
Submit the specimen for inspection in a timely manner.

Which COVID test is more accurate, nasal or throat swab?

Research is underway to determine the most accurate way to test for COVID-19, specifically using the Omicron variant. We do know that Omicron tends to stay in the upper airways rather than travel to the lower airways or lungs. Therefore, a throat swab may be more likely to find it. But again, research is still ongoing.

A recently published study suggests that saliva swabs may be more accurate in detecting Omicron variants than nasal swabs. But the study looked at PCR tests, not at-home rapid tests. So the results may not apply to home tests because these tests work differently. Another study found that PCR throat swabs were slightly better at detecting the virus than nasal swabs. But this research was done before the Omicron variant.

It is also important to note that throat swabs are more difficult to collect. If done incorrectly, the results may be inaccurate. At this point, it is best to wait until we have more data and leave the throat swab to the provider.

Notice

For the Omicron variant, a saliva test (and possibly a throat swab) may be more accurate than a nasal swab. But current rapid home tests are not designed for throat swabs. To avoid potentially false results, these tests should only be used as intended. Until we do more research, we can’t say for sure whether combining swabs with home testing is a good idea. When in doubt, consider a PCR test for more accurate results.

Flocked Swab Manufacturer

Posted on 2022年2月23日2022年3月22日 by Dr. Lee

Oropharyngeal Sampling Swab

It is a detection method to understand the patient’s condition, oral mucosa and throat infection.

Nasopharyngeal swab

A specimen collection tool used to collect cell samples from the nasopharynx (above the throat).

Viral Transport Medium (VTM Kits)

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

How to Use Specimen Collection Kit

Posted on 2022年2月22日2022年3月22日 by Dr. Lee

What is a Specimen Collection Kit?

Sample collection kits provide all the components needed to secure samples and send them to laboratories for diagnostic. Environmental sampling and research purposes. Timely collection and processing of samples are critical to ensure accurate results and prevent analytical errors.

Specimen Collection Kit Contains:

Individually packaged sterile specimen collection flocked swab;
10ml virus sampling tube, containing 3ml Viral Transport Media;
Sterilization packaging, Individual in Paper peeled pouch;

The novel coronavirus (2019-nCoV) is an RNA virus. Improper storage or transportation of samples after collection may result in the degradation of part of the nucleic acid and affect the test results;

In addition, samples that have not been inactivated virus can easily lead to indirect infection of operators.

The covid-19 sampling kit independently developed by Cell medical can not only prevent the degradation of viral RNA but also inactivate the virus.

While ensuring the test results, it can reduce the risk of biological infection during the inspection process.

Product description

Viral Transport Medium Chin, VTM kits For COVID-19. Cell medical not only produces sampling swabs but also virus sampling tubes.

Analyzing material effectively starts with collecting samples with the right tools, whether it’s collecting samples from the body to aid in medical diagnosis, identifying potentially harmful pathogens from the environment.

Or collecting samples from crime scenes to aid in investigations.

However, it is also important to ensure that contaminants do not come into contact with the sample as it travels to the laboratory. Given the plethora of options available for each of these missions, choosing the right collection and transport vehicle can be overwhelming. This is where a specimen collection kit can prove invaluable.

Features:

1. Safety: Sampling and virus inactivation are carried out simultaneously, which greatly reduces the operator’s infection risk;

2. Stability: keep the sample stable, avoid nucleic acid degradation, and ensure the accuracy of the test results;

3. High efficiency: Inactivated virus samples can be detected in conventional PCR laboratories, and the collection tube can be adapted to the Tianlong automated nucleic acid extraction system, which improves the detection efficiency of samples.

Instructions:

What is the Specimen Collection Kit?

As pointed out over, example collection packages have shown very usefully in securing examples for analysis in a large range of clinical, environmental and research study applications.

Nasopharyngeal samples collected by swabbing the upper retronasal vocal cords can supply analysis confirmation for a series of viral as well as bacterial infections, consisting of influenza, COVID-19, enterovirus D68, as well as other respiratory system conditions.
Fecal samples can be gathered by anal or fecal swabs as well as can aid clinicians detect a series of intestinal microbial infections.
A vaginal swab example can help determine the visibility of Group B Streptococcus or Streptococcus agalactiae, a type of microorganisms found in the digestive system and also birth canals of a quarter of pregnant ladies, to name a few conditions.
Food sampling is not just important for recognizing the potential presence of foodborne pathogens but is a crucial step in maintaining conformity with FDA food security requirements.

How to choose the right specimen collection kit?

It is necessary to discover a sampling collection set created for your particular end-use. This consists of using the flocked swab that best matches your sampling collection needs. As an example, foam swabs might use elution characteristics best matched for environmental and also food sampling, while polyester or crowded swabs may supply a combination of collection attributes and also person comfort far better fit for medical usage.

Nonetheless, it is not constantly necessary to utilize a sample collection package created for usage with the example cpu’s very own brand name of the fluid transfer system. Validation examinations can aid clinicians, food mill and also other samplers, and also labs recognize precise and also affordable sample collection kits. Verifying shipping systems from several suppliers has come to be a common practice in research laboratories around the globe, not just to ensure sustainable supply, but likewise to compare item top quality and expense.

What is a Medical Swab

Posted on 2022年1月5日2022年3月22日 by Dr. Lee

What is a Medical Swab

In the COVID-19 sampling, medical flocked swabs are the most commonly used testing method.

Application: oral mucosal cells, oral microorganisms, virus sampling and transportation, DNA/RNA collection, throat sampling, cervical sampling, nasopharyngeal sampling and other fields.

In addition, we can also use medical cotton swabs for the collection and transportation of DNA for paternity testing.

As well as the collection, preservation and transportation of flu specimens.

According to the material, medical swabs can be divided into cotton swabs, foam swabs, non-woven swabs, flocked swabs and other products. Among them, the market share of cotton swabs is higher, reaching 76%.

According to the application field, medical swabs include gynecological, cervical and vagina sampling swabs; oral, nose, and pharynx sampling swabs; laboratory test sampling swabs; virus and bacteria sampling; disposable sampling swabs; sterile cell sampling And other products.

However, due to the influence of new coronary pneumonia and the popularization of nucleic acid testing, the proportion of medical swabs used for specimen sampling is increasing.

With the continuous improvement of medical conditions in developing countries around the world, the application demand for medical swabs is on the rise.

In 2020, the global medical swab market will reach 400 million U.S. dollars, with an output of about 38.4 billion pieces.

Moreover, due to the development of the world economy, the price of medical cotton swabs has shown an upward trend.

Cell Medical swab

Choose the right medical swab

Swabs are one of the most commonly used disposable devices in the medical industry. But how do you know which application to choose? We have put together a brief overview on how to choose the right medical swab for your specific needs.

Cotton swab

The tip of American pharmaceutical-grade spun cotton fiber has become the standard for applicators for all applications from basic patient care to crime scene investigation.

With strong water absorption capacity, softness, low cost and safety, the performance of the cotton swab is consistent and reliable.

However, it is generally not recommended to use cotton swabs for specimen collection.

why? The characteristics of this natural material prevent the sample from being effectively released, and the naturally occurring fatty acids in this material interfere with the processes used in microbiology and DNA extraction and have proven harmful to organisms.

Rayon cotton swab

Rayon is a synthetic fiber made from wood pulp.

Although classified as synthetic fiber, it is actually a natural material.

Unlike cotton, artificial fiber removes materials that may sample or react to samples for transportation and processing during the production process, so it is usually used to sample for diagnostic tests.

Polyester fiber swab

Swab head material adopts polyester filament winding.

Polyester fiber is used for microbial collection, rapid diagnosis and PCR detection.

The polyester scraper has a higher release rate, but its cost is higher than cotton swab and rayon swab.

Foam tip swab:

Foam swab

The swab made of medical polyurethane is a very good diagnostic material, especially suitable for cell sampling.

The number of holes on the surface is generally 100 PPI (holes per inch).

This material has good hydrophilicity and poor absorption of hydrophobic substances.

Used in occasions where resistance to chemical corrosion is required, and it is also used for DNA and microbial sampling.

Synthetic swabs (rayon and polyester) are used to collect bacterial culture specimens, rather than cotton swabs that may contain inhibitory or toxic substances.

Flocked swab:

flocked swabs

First developed flocking technology for cosmetics and industrial production.

Because of the planting process and the use of multi-head bifurcated polyester fiber materials.

The flocked swab has a very high absorption and release rate, and it is also effective for molecular sampling and absorption.

Some institutions designate to conduct research on nucleic acid sampling and certain genome analyses.

At present, the development of swabs not only reflects the changes in the materials of sampling swabs, but new demands in the fields of nursing, testing, and scientific research have led to the multi-dimensional development of swabs.