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Anterior Nasal Swab VS Nasopharyngeal Swab

Posted on 2022年4月21日2022年4月21日 by Dr. Lee

How do avoid damage to the nasal cavity through nasal swab sampling for nucleic acid detection and antigen detection? Rhinitis patients should pay attention to what?

Standardized collection methods for nasopharyngeal swabs :

Nasopharyngeal Swab

1. The sampler lightly supports the head of the person to be collected with one hand, and sticks the swab into the nostril with the other hand.

And slowly penetrates backward along the bottom of the lower nasal passage. Because the nasal passage is curved, do not use excessive force to avoid traumatic bleeding.

2. When the top of the swab reaches the back wall of the nasopharyngeal cavity, gently rotate it for one week. (If you have a reflex cough, it should stay for a while). Then slowly take out the swab, and immerse the swab head in the matching test strip. In the sampling tube of the virus transport medium.

The nasopharyngeal collection method collects a sample from the nasopharynx, which is the upper part of the throat behind the nose.

Nasopharyngeal Swab Pcr Test

In this test, a small pointed flocked swab is inserted into the nostril parallel to the chin until resistance is felt.

Inserted no deeper than half the distance between the nostril and the ear.

The swab is then swirled a few times while remaining in place, and then slowly removed while gently swirling.

If the flocked tip of the swab is completely saturated with the sample, it may not be necessary to collect samples from both nostrils.

This method is often less comfortable for the patient but is generally not considered painful.

This method is not recommended for self-testing and should only be performed by a healthcare practitioner.

Swabs for use in the nasopharynx are designed with a micro-tip made of ultra-fine flocked material and a thin, flexible handle usually made of polystyrene.

Standardized collection methods for nasal swabs (anterior nasal swabs):

Anterior Nasal Swab

1. The collected person first used toilet paper to remove the snot, and then tilted his head slightly.

2. The sampler lightly supports the head of the person to be collected with one hand, holds a swab with the other hand and sticks it into one nostril. And slowly goes back along the bottom of the lower nasal passage for 1-1.5 cm. And then sticks to the nasal cavity and rotates at least 4 times. (The residence time is not long. less than 15 seconds). Then repeat the same procedure in the other nasal cavity using the same swab.

3. After slowly taking out the flocked swab, immerse the swab head in the sampling container containing the preservation solution that comes with the test strip.

Precautions:

1-1.5cm deep into the nasal cavity (about 1cm for children).
Rotate 4-5 times against the nasal cavity (time not less than 15 seconds).
Bilateral nasal collection from the same swab.

Standardized collection methods for oropharyngeal swabs (pharyngeal swabs):

Oropharyngeal sampling swab

1. The head of the person being collected is slightly tilted, the mouth is wide open, and the mouth shape is “ah”, exposing the pharyngeal tonsils on both sides;

2. Pass the swab across the base of the tongue, and wipe the pharyngeal tonsils on both sides of the subject with slight force back and forth at least 3 times.

And then wipe the posterior pharyngeal wall up and down at least 3 times.

And immerse the swab head in the preservation solution provided with the test strip. in the sampling container.

Why do nucleic acid testing (PCR swab test), and what can be detected?

Nucleic acid testing is to find direct evidence of the presence of the virus.

A positive nucleic acid test for the new coronavirus pneumonia indicates that the subject has the virus in the body and may be infectious.

If accompanied by fever, respiratory symptoms or other clinical characteristics of patients with new coronary pneumonia, combined with a positive nucleic acid test, a patient with new coronary pneumonia can be diagnosed; if there are no clinical symptoms and a positive nucleic acid test result, it can be determined as an asymptomatic infection. Therefore, nucleic acid detection is of great significance as a standard for diagnosing new coronary pneumonia.

Nasopharyngeal swab test and Anterior Nasal Swab test, which is better?

As we all know, nucleic acid detection generally takes throat swab detection, and throat swab detection is divided into nasopharyngeal swab detection, Anterior Nasal Swab, and oropharyngeal swab detection. The difference between them is that the sampling sites are different, but there is no essential difference. Most medical institutions use oropharyngeal swab testing because this testing method is less uncomfortable for the sample and more convenient for sample collection.

For the sampling of the new crown antigen professional version and home self-test version. Because this method is less invasive, and generally more comfortable for the patient.

How Accurate Is The Nasal Swab

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

Swab test has methods such as nasal swab and pharyngeal swab.

Which is more accurate, nasal swab or pharyngeal swab?

Which of the two is more painful? If you want to know, let’s have a look.

Which is more accurate to detect a poke in the nose or a poke in the throat？

Theoretically, under the condition of standard operation, the results and accuracy of nasal swabs and pharyngeal swabs will be the same.

However, in the actual clinical work and the reagents for collecting samples, nasal swabs and pharyngeal swabs need to collect the secretions on the respiratory mucosa, which are irritating to some extent.

In particular, pharyngeal swabs are prone to nonstandard phenomena.

For example, without a tongue depressor, the pharynx of the subject is more sensitive and cannot collect qualified samples.

In addition, the throat swab needs the collector to open his mouth, which is easy to form aerosols and pollute the surrounding environment.

This will not ha ppen during the collection of nasal swabs.

In contrast, the results will be more accurate.

Nasopharyngeal swab and throat swab which is painful？

Depends on individual tolerance.

In the collection of nucleic acid sample detection samples through nasal swabs and throat swabs.

There will be a certain discomfort, but this discomfort is within the tolerable range.

However, compared with the two, nasal swabs may be less irritating to the mucous membranes, and the discomfort caused by standardized operations is less,

Collected through the nasal cavity, the public’s acceptance of them will be lower.

Can I do a swab test for a sore throat?

Yes.

Nucleic acid testing can also be performed during throat inflammation, which will not affect the results of the nucleic acid test.

It’s just that symptoms such as acute pharyngitis, acute tonsillitis, acute epiglottitis, etc., in the process of nucleic acid detection, have a certain degree of irritation to the mucous membranes of the throat, which can easily aggravate throat discomfort.

Recommended to inform the medical staff in advance before nucleic acid sampling.

Can I eat before the nucleic acid test

Avoid eating.

Avoid to eat 2 hours before the nucleic acid test, because when collecting nucleic acid samples, it is usually necessary to collect secretions from the throat or nasal cavity. Because the cotton swab will irritate the throat during nucleic acid test sampling, it can cause nausea and throat of the patient.

Symptoms such as discomfort, if you eat too much, it is easy to cause vomiting.

In addition, before the nucleic acid test, be careful not to smoke or drink alcohol, and it is best not to chew gum, otherwise the accuracy of the nucleic acid test may be affected.

How to do Nasal Swabbing for COVID

Posted on 2022年1月18日2022年1月18日 by Dr. Lee

How to do Nasal Swabbing for COVID

Swab Instructions

Learn about swab testing for COVID-19 and other similar diseases. Thank you for taking the time and paying attention to the instructions below.

1. Open the nasal swab

Flocked Swab

Remove the nasal swab from the wrapper by pulling the two ends of the wrapper apart (like you would open a band-aid).
Be careful to only touch the handle, not the tip.

2. Swabbing nose

Flocked Tip Swab Nylon Sterile Nasal Swab Stick

Gently insert the entire soft tip of the swab into one nostril until you feel a bit of resistance and rub it in a circle around your nostril 4 times.
Next, gently insert the same swab into the other nostril and rub it around the same way.

3. Put swab in the tube

NASAL SWAB SAMPLING PROCESS

Lower the swab, tip ﬁrst, into the provided tube.
Once the tip is at the bottom, break the swab handle at the top of the tube by bending back and forth.
Screw the red cap on tightly.

Cellmedical-SwabNasalCollectionInstructions

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.

How to Obtain a Nasopharyngeal Swab Specimen

Posted on 2021年9月28日2022年1月10日 by Dr. Lee

How to Obtain a Nasopharyngeal Swab Specimen

As a non-invasive operation, nasopharyngeal swab sampling is the first choice for diagnosis, monitoring and differential diagnosis of New Coronavirus pneumonia. Its sampling randomness is high. However, the sampling personnel may have false-negative test results due to the different location, strength and time of scraping samples, which may have an adverse impact on the epidemic prevention and control. During the operation, the patient choked and splashed to produce an aerosol, which is very easy for medical staff to have occupational exposure.

This paper mainly explains in detail the protection of medical staff when collecting nasopharyngeal swabs, the collection, packaging and transportation of nasopharyngeal swabs, as well as the patient’s body position, operation methods, collection parts and precautions during specimen collection.

Effective communication and nurse-patient cooperation help the successful collection of nasopharyngeal swabs.

Before the operation, the degree of cooperation of patients should be effectively evaluated. Inform the patient of the collection purpose and precautions in advance.

Clinicians should be cautious if the patient has recent nasal trauma or surgery, a significant deviation of the nasal septum, or a history of chronic obstructive nasal patency or severe coagulation disease.

Standard protection is the foundation of successful nasopharyngeal swab collection

Operator preparation: first, wear protective clothing, wash hands with soap and water (or alcohol), and wear a pair of non-sterile gloves. Then, according to the recommendations of the Centers for Disease Control and prevention, wear an N95 or higher protective mask. Finally, wear a face mask to protect your face and eyes.

Swab Nasal Covid Sampling preparation: operating platform; Sampling materials, including nasopharyngeal test swab, VTM kits, inspection sheet and bar code, transport bag and hand disinfectant, to ensure the sterilization effect and validity period.

Obtain a Nasopharyngeal Flocked Swab Specimen

Nasal swab specimen collection method.

(1) Wet the flocked swab in normal saline.

(2) Measure the distance from nostril to ear root with a swab and mark with your fingers.

(3) Insert the swab into the nostril in the direction perpendicular to the nose (face) until the finger touches the nose, keep the swab in the nose for 15-30 seconds, and then rotate it gently for 3 times.

(4) Put the swab into the virus delivery medium, break the swab rod and place it completely in the tube.

(5) Tighten the tube cover, mark it, put it into the specimen bag and seal it.

(6) If it is necessary to collect from two nostrils, one swab should be used respectively.

(7) Store at 4 C or on ice (short term storage).

CDC recommends that all patients suspected of infection with COVID-19 use masks.

Ask the patient to take off the mask and wipe the nose with a paper towel to remove excessive secretions from the nasal cavity.

Remove the cotton swab from the package. Tilt the patient’s head back slightly so that the nasal tract is more accessible.

Let the patient close his eyes to reduce the slight discomfort caused by the operation.

Gently insert the swab into the nasopharynx along the nasal septum until resistance is felt.

Tips for nasopharyngeal swab sample collection.

The nasopharynx swab is inserted quickly. Do not hesitate. Some patients are intolerant to the operation of probing the nasopharyngeal swab into the nasal cavity, resulting in tears, foreign body feeling, etc. before the operation, ask the patients to inhale deeply in order to avoid choking and coughing.

When the cotton swab reaches the expected depth, do not continue to go deep, so as not to cause nasal mucosal damage and bleeding. During the stay, use finger strokes with the patient to read the seconds. It can distract attention, eliminate tension and motivate patients to ensure successful collection.

Never allow the patient to fully raise his head and bend the swab, which will lead to incorrect retention position of nasopharyngeal swab head and ultimately affect the accuracy of specimen collection results.

The operator can select the left / right side of the operator according to his left and right hands, and stand on the patient’s head and shoulder for operation. The patient’s head does not need to be biased to the opposite side. It is difficult to control the entry angle of the flocked swab when facing the side head, which may cause mucosal irritation. For patients with excessive tension, the operator can hold the patient’s hand and give comfort.

Quick questions and answers about nasopharyngeal swab sampling

1. Q: can carry out New Coronavirus test specimen collection personnel?

A: Qualified personnel with sampling skills after biosafety training.

2. Q: COVID-19 test specimen preferred?

A: Respiratory specimens.

Specific detection of

3. Q: infection in New Coronavirus includes?

A: Nucleic acid detection (nasal swab and pharyngeal swab); Virus isolation; Antibody detection.

4. Q: What are the key points of nasal swab collection?

A: Nasal swab: when the top of the swab reaches the posterior wall of the nasopharyngeal cavity, rotate it gently for one week.

5. Q: what respirator is used to collect COVID-19 respiratory specimens?

A: Masks N95 and above.

6. Q: how to disinfect hands after collecting samples?

A: After disinfection with disinfectant, take off the outer gloves, disinfect the inner gloves and wear new outer gloves.

7. Q: when taking off personal protective equipment, which of the following operations should be carried out first?

A: Spray disinfectant all over the body.

8. Q: What should we pay attention to when taking off conjoined protective clothing?

A: Ensure the contaminated surface of the conjoined protective clothing in the whole process, do not touch the inner clothing, and take off slowly and gently.

Contact us

Cell medical (Dongguan) Co., Ltd.
E-mail：flockedswabs@gmail.com
No. 98, Wusha street, Chang’an Town, Dongguan City, Guangdong Province, China.
Web：www.swabmanufacturer.com

Flocked swabs can be customized according to customer needs

Posted on 2021年9月6日2021年12月25日 by Dr. Lee

Flocked swabs can be customized according to customer needs.

Flocked swab customization

Cell medical (Dongguan) Co., Ltd. is a comprehensive high-tech biotechnology company and an OEM factory of flocking swabs in China. We support custom production, our swab OEM factory produces flocked swabs, pharyngeal swabs, nasal swabs, oral swabs, sponge swabs, virus sampling tubes, transportation media, sample preservation solution and nucleic acid extraction kits. Our GMP factory was built in 2016, the factory has an ISO13485 quality management system, CE, FDA and other qualifications.

vtm kit production process

flocked swabs customization

We support ODM and OEM

Our factory has many automatic production lines. We support customized production, OEM, ODM, etc., and develop and design products with customers. Willing to challenge all kinds of demanding swabs.

Flocked swab customization, VTM kit customization, virus transport medium customization, virus collection and transport kit customization, disposable virus sampling tube customization, nasopharyngeal swab customization, oropharyngeal swab customization etc.

Welcome to consult our factory, we will serve customers wholeheartedly and develop high-quality flocking cotton swabs with customers.

Product features

1. nylon fiber flocked swab technology, the sample collection amount and release amount are as high as 95%;

2. nylon staple fixed vertically, faster and more efficient elution;

3. Single and independent packaging shall avoid pollution.

4. Strict process conditions, without DNase and expandable human DNA.

5. The tube body is transparent and the inspection materials are visible.

6. The unique patented casing design ensures the air circulation in the casing, prevents the inspection material from mildew due to the humid sealing environment. And avoids magazine pollution in the external air, which affects the inspection quality.

Our advantages

1. specially designed for virus sampling and DNA micro-sample. Especially for micro samples such as sweat, semen, blood, dandruff and oral cells, it has superior collection performance.

2. It can quickly adsorb trace samples and has a high release aging rate.

3. the front end is more sophisticated, which is suitable for the extraction of cells in the fingernail seam of the victim or suspect.

4. Unique swab breakpoint design, which is conducive to the automatic extraction workstation for sample extraction.

5. The whole swab is packed in a transparent plastic tube to avoid biological pollution.