flocked swabs definition

Posted on 2021年9月3日2021年12月21日 by Dr. Lee

Flocked swab 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.

Picture of sampling flocking swab

Why use flocked swabs？

COVID-19 is New Coronavirus’s variant coronavirus, which can cause pneumonia after human infection. It belongs to an acute respiratory infectious disease, which is highly infectious and generally susceptible to people. It is easy to replicate in the upper respiratory tract of human body. In general, new crown nucleic acids are detected rapidly within 96 hours after infection. Testers can find viruses in the human upper respiratory tract. Experiments show that flocking swab can quickly elute > 95% of the original samples, and easily improve the detection sensitivity.

Application of sampling flocked swabs.

The upper respiratory tract of the human body includes the nasal cavity, pharynx and throat. That is to say, if a person is infected with COVID-19, he can extract the nucleic acid of the virus in the nasal cavity, pharynx and larynx in 96 hours. Therefore, we generally sample these locations when we carry out the rapid detection of new crown nucleic acid.

we distinguish swabs by different sampling positions. For nasal sampling, we become nasopharyngeal flocked swabs; For oral sampling, we become oropharyngeal flocked swabs.

What is the difference between nasopharyngeal swabs and oropharyngeal flocked swabs?

Nasopharyngeal swabs and oropharyngeal swabs differ in material hardness in addition to the differences in sampling sites. The nasopharyngeal swab is generally slender and soft, and can change its shape along the nasal cavity, which is convenient for the sampling personnel to probe into the upper respiratory tract along the nasal cavity. The oropharyngeal swab will be thick and hard.

In terms of comfort, there are also great differences between the two. Since gas exchange is often carried out in the nasal cavity, the swab shall be fully extended to the end of the nasal cavity during sampling to ensure that sufficient concentration of samples are collected. This usually brings very uncomfortable feeling to the subject, and sometimes even leads to epistaxis.The oropharyngeal swab only needs to collect the pharyngeal sample, and only needs the person to open his mouth for collection. Although it occasionally causes a temporary feeling of nausea, the discomfort will not last too long.

There are also obvious differences between the two in drug loading. Studies have shown that in patients infected with the new crown virus, the amount of drug carried on the nasopharyngeal swab is significantly higher than that on the oropharyngeal swab. In other words, the detection amount of nasopharyngeal swabs is generally higher than that of oropharyngeal swabs.

In addition to nasopharyngeal flocked swabs and oropharyngeal swabs, there are anal swabs. As the name suggests, anal swab is a kind of test for patients with gastrointestinal symptoms. It can effectively improve the detection rate, but it is not widely used because of the inconvenience of sampling.

Attention

After sampling the flocking swab, we should immediately put the swab into the storage tube to avoid polluting the sample. Then, the subsequent rapid detection process of new crown nucleic acid was carried out. No matter what kind of swab is used, the process of rapid detection of new crown nucleic acid is the same. The rapid detection of new crown nucleic acid was completed in four independent areas of the laboratory, and the test results were obtained.

how to collect nasopharyngeal swab?

Posted on 2021年9月1日2021年12月21日 by Dr. Lee

how to collect nasopharyngeal swab?

After several times of nucleic acid sampling and testing, citizens wondered: why do some people require nasopharynx swabs and some people can collect oropharyngeal swabs? Today, experts from cell medical will explain to you.

What is a sampling swab?

At present, except for special diseases, COVID-19’s nasopharyngeal swabs and oropharyngeal swabs are the most common ways of collecting.

Studies have shown that nasopharyngeal swabs have higher detection rate of COVID-19 nucleic acids than oropharyngeal swabs. Because the nasopharyngeal cavity is relatively closed and the virus is easier to accumulate. However, whether it is oropharyngeal swab or nasopharyngeal swab, the key is that the collection action must be standardized, in place and meet the standards. As long as the acquisition is standardized, both methods can achieve the expected detection purpose.

How to collect a nasopharyngeal swab?

nasal swab collection method_How to collect a nasopharyngeal swab？

1. The patient’s head tilts back (about 70 degrees) and persists. 2. Use a swab to estimate the interval from the ear root to the nostril. 3. Insert from the nostril pen to the face. The deepening interval should be at least half of the length from the earlobe to the tip of the nose. Reach the posterior nasopharynx after encountering resistance, stay for several seconds to absorb secretions (generally 15 ~ 30s), and rotate the swab for 3 ~ 5 times. 4. The swab should be gently rotated and taken out, and the swab head should be immersed in a collection tube containing 2ml lysate or cell preservation solution containing RNase inhibitor. 5. Break the sterile swab rod at the top, discard the tail, tighten the tube cover and close it with sealing film.

oropharyngeal swab collection

collection method of oral swabs

1. Ask the patient to gargle with normal saline or clear water first.

2. Wet the flocked swab in sterile normal saline.

3. The patient sat down with his head tilted back and his mouth open, accompanied by an “ah” sound.

4. Fix the tongue with a tongue depressor, and the swab jumps over the root of the tongue to the posterior pharyngeal wall, tonsil recess, lateral wall, etc.

5. The bilateral pharyngeal tonsils should be swabbed back and forth with moderate force for at least 3 times, and then the posterior pharyngeal wall should be swabbed for at least 3 times, 3 ~ 5 times.

6. Remove the swab to prevent touching the tongue, pituitary, oral mucosa and saliva.

7. Immerse the swab head into the preservation solution containing 2 ~ 3ml virus.

8. Break the sterile swab rod near the top, discard the tail, tighten the tube cover and close it with sealing film.

After the introduction of our experts, do you have a deeper understanding of sampling swabs? If you want to know more product details and prices, please leave us a message. We will serve you wholeheartedly!

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Nasal swab test

Posted on 2021年8月25日2021年8月25日 by Dr. Lee

We used pharyngeal swabs to collect samples from nucleic acid samples. They are “nasopharyngeal swab” and “oropharyngeal swab”.

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.

Nasopharyngeal swab sampling process

Oropharyngeal flocked swab sampling process

The pharynx includes nasopharynx, oropharynx and pharynx, all of which belong to the field of upper respiratory tract.The sampling methods of nasopharyngeal swab and oropharyngeal swab are different.

PCR test can collect nasopharyngeal swabs, sputum and other lower respiratory tract secretions, blood, feces and other specimens for testing, nucleic acid detection by New Coronavirus.If its specimen nucleic acid is positive, it can clear the virus infection.

New Coronavirus infection mainly invades bronchial epithelial cells and alveolar epithelial cells. Lower respiratory tract specimens, such as sputum and airway extracts, more accurately reflect virus infection.

Advantages of nasal swabs

More specimens can be obtained by staying in the pharynx for a long time, which is also the reason why the positive rate reported in the literature is higher than that of oropharyngeal swabs.

How to use CM oral swab

Posted on 2021年8月23日2022年3月22日 by Dr. Lee

How to use CM oral swab
Cell medical (Dongguan) Co, Ltd.

Oral sampling display picture

Use steps

1. Tear off the sealing paper on the packaging bag of the oral swab, and suck the inhaled contaminated swab from the swab. Note that the swab head is in contact with other items other than the oral wall and cannot be sucked.

2. Hold the oral swab to stretch out the oral wall, rotate the oral mucosa for 10-15 times, and then up and down 5-10 times, rub it moderately, and it is advisable to put the oral cavity close to the inner mucosa to ensure that the sampling tip sucks the wall everywhere Exfoliated cells from the oral mucosa; follow the same method and collect them on the other side of the oral cavity.

3. After the collection, the oral swab is taken out of the oral test tube, and the sample is natively sampled. The sampling handle with the broken mark is broken, the sampling sampling tube cover tube, and the final extraction is attached to the link between the sampling test tube cover and the tube cover. Dry it in time and send it for inspection.

Matters needing attention

1. Do not touch the sampling head with your hands or other objects.

2. Do not smoke, drink, or eat 30 minutes before sampling.

3. The oral swab is a disposable product and should not be used twice.

4. Do not use if the package is damaged.

Product features

1. Adopt internationally accepted paper-plastic packaging which is convenient for sterilization.

2. Gamma ray sterilization to ensure sterility.

3. Each set in the large packing box is individually packaged for easy use.

4. Different preservation solutions are selected for different types of specimens.

Advantage

1. The unique spray-type implanting nylon fiber technology increases the collection and release of specimens.

2. The swab has a total length of 14.5cm, and the plastic rod has a unique breakable design.

3. The fluffy texture can collect more target analytes.

4. There is no residual amount of specimens, which speeds up the processing of specimens.

5. The swab is sterilized and individually packaged.

CM Nylon Flocking Swabs have undergone a large number of clinical experiments to show that, compared with ordinary sterile cotton swabs, CM Nylon Flocking Swabs have a better effect on the collection and transportation of clinical microbial specimens. This is especially true for those specimens that cannot be submitted for inspection in time and have been placed for too long.

What is a oropharyngeal swab?

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

Pharyngeal swab is used to examine throat diseases.

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

What is COVID-19 nucleic acid testing using throat swabs?

Oropharyngeal Sampling

Because COVID-19 is mainly spread through droplets and contacts, plus the ACE2 receptor necessary for COVID-19 invasion in the respiratory tract, the respiratory tract of the infected person is the main gateway for COVID-19 invasion.

How to pharyngeal swab sampling ?

1. Tear off the outer package of the sampling swab and take out the sampling swab;

2. Expose the throat and press the tongue down with a tongue depressor if necessary;

3. Take out the sterile swab, gently and quickly wipe bilateral pharyngeal tonsils and posterior pharyngeal wall for 3 times, and put the swab head into the preservation solution,

4. Buckle and fold the tail of the swab at the mouth of the storage tube, discard the tail, tighten and cover the tube cap,

5. Check the patient’s name again after sampling;

6. Put it into a sealed bag and a special transfer box, and quickly send the samples to the laboratory for inspection.

use pharyngeal swab sampling