how to collect nasopharyngeal swab?

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

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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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

np swab vs op swab

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

Since the end of July, COVID-19 has been scattered everywhere. Universal COVID-19 nucleic acid detection has been opened in many parts of the world. After several rounds of nucleic acid sampling and testing, many citizens have some doubts. What are the differences between nasopharyngeal test and oropharyngeal swab sampling?

What are the ways of sampling the nucleic acid of the SARS-CoV-2?

nucleic acid samples collected through the nasal cavity are called “nasopharyngeal swabs”. Samples collected through the mouth are called “oropharyngeal swabs”. Both are the main ways to collect samples from COVID-19 nucleic acid detection. In addition, there are deep expectoration fluid, nasopharyngeal or respiratory tract extract, bronchial lavage fluid, and alveolar lavage fluid.

how to choose nasopharyngeal swabs and oropharyngeal swabs?

Whether to choose nasopharyngeal swabs or oropharyngeal swabs, mainly follows the following principles: first, according to the eighth edition of the prevention and control plan and the second edition of COVID-19 nucleic acid testing manual, the first choice is to collect nasopharyngeal swabs while collecting nucleic acid samples. Secondly, asymptomatic infected persons, entry personnel and close contacts should collect nasopharyngeal swabs during isolation observation; Third, due to the relatively simple operation of oropharyngeal swabs, more oropharyngeal swabs should be collected when nucleic acid detection is carried out in low-risk areas.

why should nasopharyngeal swabs be collected first?

The study shows that the detection rate of COVID-19 nucleic acid in nasopharyngeal swabs is higher than that in oropharyngeal swabs, because the nasopharyngeal cavity is relatively closed and the virus is easier to accumulate. Secondly, the sampler can stand behind the patient’s side. The patient only needs to expose his nostrils, and there is basically no pharyngeal reflex. The exposure risk of the sampler is lower and safer than that of the oropharyngeal swab. However, whether it is oropharyngeal swab or nasopharyngeal swab, the key is that the collection action should be standardized, in place and meet the standards. As long as the collection is standardized, both methods can achieve the expected detection purpose.

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.