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Nasal Swab Covid Test

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

Some people need to be tested for COVID-19 with a quick swab.

The pros are sure: If it is possible for you to test both the nose and the throat at the same time.

Officially, the FDA follows inspection guidelines. Simply put, observe the subtests consistently during this period.

COVID19 test flocked swabs to exteriors.

What is a nasal swab?

COVID Swab test

A nasal swab is a test that checks for viruses in the nasal cavity, and the result is a test that checks the nasal cavity by a method.

Because of rhinitis in the nasal cavity, sinusitis, sinusitis, nasal cavity in the nasal cavity and other problems.

There are several respiratory infections, including the flu, COVID-19. A nasal swab can help your doctor determine the type of infection you have and which treatment is definitely best for you.

The test can be done by taking a sample of cells from your nostrils or nasopharynx.

A nasopharyngeal flocked swab is the uppermost part of the nose and throat.

Other names: Anterior nostril examination, turbinate swab, NMT swab, nasopharyngeal culture, nasopharyngeal swab

Why do I need a nasal swab?

01The positive detection rate of nasal swabs is higher.

When using a throat swab to detect the new coronavirus, the base of the tongue will instinctively prevent the cotton swab from going deep, and the cotton swab is not easy to reach the back wall of the pharynx. . The nasal swab is easier to reach the tested site and can stay in the nasopharynx for a long time, and the test results are more accurate. Students returning to school from the north and south of the river and by various means of transportation require us to improve the accuracy of testing in a responsible attitude to everyone’s health.

02Nasal swabs are safer for nucleic acid collection personnel.

During the nasal swab test, the tested person needs to wear a mask with only the nostrils exposed; while for the throat swab test, the tested person needs to open his mouth wide, and the exposed area is large. If the tested person coughs and retches, the nucleic acid tester may face a greater risk of infection. Once the testers are infected, the risk may spread to a wider range of people.

03 Throat swabs may be more uncomfortable than nasal swabs.

Throat swabs are collected across the base of the tongue to the posterior pharyngeal wall, tonsillar recesses, sidewalls, etc., and repeatedly wiped 3 to 5 times to collect mucosal cells. In response, nasal swabs were relatively less irritating to the mucosa.

The entire nasopharyngeal swab process:

nasopharyngeal swab

You will throw your head back.
Your healthcare provider will insert the swab directly into your nostril until it reaches your nasopharynx (the top of your throat).
Your supplier will rotate the swab and remove it.
Do I need to do any preparation for the exam?
For nasal swabs, you don’t need any kind of special preparation.

Nasopharyngeal Swab Collection Instructions

Posted on 2022年2月24日2022年3月22日 by Dr. Lee

Nasopharyngeal swab sampling： A thin flocked swab into the nostril, from the lower nasal meatus to the posterior wall of the nasopharynx.

And then twisting the swab for sampling.

The depth of the sampling swab into the nasal cavity is approximately the distance from the tip of the nose to the earlobe.

How to collect a Nasopharyngeal (NP) swab

1. Keep your head still, to remove the secretion on the surface of the anterior nostril;

2. Measure the distance from the tip of the nose to the earlobe with a swab as well as mark it with your finger. Put the swab right into the nasal dental caries in the direction perpendicular to the nose (face), and also reach the posterior nasopharynx when it comes across resistance, to make sure that the swab stays in the nose for 10-15 s, gently rotate 3 to 5 times to secure the examination piece.

There is definitely no demand for the sampler to stand straight opposite the patient. The advantage of standing on the side is that if the patient has coughing, sneeze, etc, it can be avoided in time.

It is vertical to the coronal airplane of the head or the face and also permeates deeply from the inferior meatus to the posterior wall of the nasopharynx, as well as it is enough to feel the wall surface. The depth of the nasopharyngeal swab right into the nasal tooth cavity is about the range from the pointer of the nose to the earlobe (see picture).

Nasopharyngeal sampling

3. The nasopharyngeal swab must be turned on the nasopharyngeal mucosa, maintained for 10-15 secs, and after that got rid of. The kid’s participation is poor. In practice, we typically obtain the swab in three to five secs after completely twisting it 2-3 times.

Nasopharyngeal swab vs nasal swab

A nasal swab (often called an anterior nose test): A sample taken by touching both sides of the nasal wall. The nasopharyngeal swab is to probe from the nose to the throat.

What is the nasal swab technique?

The nasal swab approach uses a swab to accumulate an analysis example from the nasal membrane. The nasal swab examination (frequently described as the former nasal test) involves putting the swab around 0.5-0.75 inches deep into the nostril as well as turning it in one nostril for 10-15 seconds while touching both sides of the nasal wall, then making use of the same cotton swab, Gather in the other nostril similarly. Since this approach is less invasive, it is usually extra comfortable for the patient – and is additionally the approach utilized when self-testing.

Nose structure

Nasopharyngeal swab

Impacted by elements such as age and also face structure development, there are private differences in the collection deepness of nasopharyngeal swabs.

We should pay attention to personal protection when collecting nasopharyngeal swabs, and clean the nasal cavity before collection.

If the patient has nasal septum curvature, the background of nasal surgery, rare coagulation characteristics, etc., the patient should inform the collection staff in advance to avoid damage to nasal caries.

During collection, the patient should tilt his head back to ensure smooth entry of the nasopharyngeal swab.

It might be accompanied by discomfort and discomfort in the nasal tooth cavity.

Furthermore, nasal bleeding might happen after nasopharyngeal swab collection.

A percentage of blood loss does not call for unique therapy. If the amount of blood loss is huge or lasts for a long time, you must go to the hospital for hemostasis therapy in time.

Additionally, clients with signs and symptoms such as edema as well as blood loss in the nasopharynx should stay clear of nasopharyngeal swab collection to avoid worsening the problem. Before the nasopharyngeal swab collection, you must avoid taking antibacterial and also antiviral drugs to stay clear of impacting the examination results.

Cell medical nasal swab adopts jet nylon fiber implantation technology, which is first-class in the domestic and foreign markets. Such material can absorb more samples.

Cell medical Flocked swab

How to Swab For Covid Test

Posted on 2022年1月15日2022年3月22日 by Dr. Lee

How to Swab For Covid Test

Since the outbreak of novel coronavirus pneumonia, we must have experienced nucleic acid testing. Covid swab test Nucleic acid detection plays a very important role in the process of infection diagnosis of COVID-19. It can not only find asymptomatic patients in the incubation period as much as possible but also greatly reduce the risk of infection.

Nucleic acid detection is so important. Next, Dr Li will take you to have an in-depth understanding of the relevant principles of nucleic acid detection, the difference between mixed collection and single collection of nucleic acid detection, and the matters needing attention in nucleic acid detection, to help you better protect yourself while popularizing knowledge.

To understand nucleic acid detection, we must understand the detection principle. Let’s take a look at its detection principle first.

The doctor is testing the patient’s nasopharynx swab

What is the principle of nucleic acid detection?

Nucleic acid, the genetic factor of the virus, is a macromolecular chain composed of four nucleotides. Different molecules represent different nucleotides and form a long chain. Nucleic acid detection is through the detection of nucleic acid in the chain, and this segment of nucleic acid is COVID-19 specific, other viruses do not.

Pcr test nasal swab and an antigen test difference for covid 19

The substance detected by the nucleic acid is the nucleic acid of the virus. At present, the detection technology is mainly through PCR (polymerase chain reaction) technology to detect the nucleic acid of the virus. During the detection, the nucleic acid chain of COVID-19 was used as the detection target, and the target gene sequence was amplified by PCR Test, which was combined with a fluorescent labelled probe added in the test reagent to produce a fluorescence signal.

The three forms of nucleic acid detection have their advantages.

Nasal swab test

This test method is to insert the test swab vertically into the nostril. And gently rotate the swab, stay in the nasal cavity for about 15 seconds, to test.

Flocked Tip Swab Nylon Sterile Nasal Swab Stick

Compared with throat swabs, nasal swab testing is more accurate for inexperienced testing personnel. And the risk of exposure is lower. However, it is not suitable for some patients with nasal allergies, high blood pressure and people who take anticoagulation and antiplatelet for a long time.

Throat swab test

At present, the most widely used detection method is also a form that is often used by everyone. During the sampling process, the patient opened his mouth and made an “ah” sound, and the testing personnel used a sterilized cotton swab to gently and quickly wipe the pharyngeal lateral wall and posterior pharyngeal wall of the subject many times.

COVID-19 Testing:PCR swab test,antibody test, and antigen test difference

COVID-19 Testing: Throat swab test

Throat swab testing: Often used in the testing process because it is more convenient and fast to collect, and it is more acceptable to the public, but the risk of exposure is also greater.

Anal swab test

This test method is a method of inserting a test swab into the anus and taking a sample at the fold of the anus or taking a sample at 2 to 3 cm for a new coronavirus test.

Many patients reject anal swab testing, but anal swabs can improve the accuracy of testing for new coronavirus infections to a certain extent. Some patients indeed have negative throat swabs, but positive ones are detected by anal swabs. In some patients, the anal swab test was still positive after the other two tests turned negative.

Anal swab

Why do multiple nucleic acid tests need to be performed?

Multiple nucleic acid tests are necessary for epidemic prevention and control.
A negative nucleic acid test does not mean that the tested person is not at risk of infection. Any detection method has the possibility of errors, especially in high-risk areas. To ensure the accuracy of the inspection results and better prevent and control the spread of the epidemic, multiple rounds of inspections must be carried out. There are also the following reasons for taking multiple rounds of detection:

After virus infection, the human body has a certain value-added period. When testing, if the virus in the body does not reach a certain concentration, we may not detect the virus.

When the specimen was collected, due to the different sampling methods, no virus cells were collected. False-negative specimens can also lead to inaccurate collection results.

Errors in the transportation process and storage of samples for inspection will also affect the results of nucleic acid testing.

Therefore, for risk areas and special populations, multiple rounds of nucleic acid testing must be carried out to more accurately and effectively detect the virus source, so as to better and more accurately prevent and control and identify infected people, and cut off the source of the virus. No matter what kind of inspection process, attention must be paid.

Flocked Swabs for Sample Collection

Posted on 2021年11月20日2022年3月22日 by Dr. Lee

Flocked swabs for sample collection

The flocked swab deposits nylon fibers on the surface of the medical ABS rod in order in a certain direction through the electrostatic field to form a brush layer. The layers are fully parallel and perpendicular to the surface of the internal rod.

The brush head can be used for Virus cell collection.

It can be used for sampling the natural cavities of the human body such as oral cavity, nasopharynx and laboratory detection.

flocked swabs for sample collection

Why flocked swabs?

The flocking swab deposits nylon fibers on the surface of the medical ABS rod in order in a certain direction through the electrostatic field to form a brush layer. The layers are fully parallel and perpendicular to the surface of the internal rod. The brush head can be used for DNA collection. It can be used for sampling the natural cavities of the human body such as oral cavity, nasopharynx and laboratory detection.

So that there is no absorption hole in the sampling area of the whole sampling swab.

And the sampling sample will not be dispersed and retained in the fiber, which is conducive to faster and more efficient elution.

Traditional cotton swabs can not completely collect and elute samples, while flocking swabs can elute 95% of samples.

Therefore, the use of flocking swabs has great advantages for various sample collection applications.

Nasopharyngeal flocked swab;

Flocked swabs have some advantages;

1. Sampling is comfortable and easy to use;

Flocking swabs now basically use “spray technology”, which vertically attaches millions of nylon fibers to the head of medical ABS swab rod through the flocking process of electrostatic charge.

The function of the vertical nylon fiber is similar to that of a soft brush. The use of this soft brush in the sampling process makes the user feel free of foreign objects. At the same time, the flocking swabs used in different parts adopt different breaking points, and the rod adopts different thickness to make the softness different.

For example, the nose swab is thinner and softer at the upper end of the rod, and the breaking point is longer, which fully conforms to ergonomics.

2. Flocked swab samples release more;

The capillary action between nylon fiber bundles promotes the strong hydraulic absorption of liquid samples. The sample is kept on the surface to make elution easier. It is much larger than the traditional winding cotton swab. The experimental research shows that the collection and release of flocking swab can reach 95% of the sample, while the cotton swab is only about 20%.

Because most of the samples collected by the cotton swab are easy to be intercepted in the fiber matrix layer of the head during release, it is not easy to release or release a small amount.

3. Flocking swab has biocompatibility and is an ideal choice for PCR;

In order to limit the damage to the sample and improve the accuracy of detection, while the flocking swab is PCR compatible and does not contain RNase and DNase.

Operation method of flocked nylon swab:

Take the sampling method of oropharyngeal swab as an example;

1. First, ask the patient to sit down, then let the patient tilt his head back, open his mouth, and make an “ah ~” sound.

2. The sampler fixed the patient’s tongue with a tongue depressor, and used a flocking swab to cross the root of the tongue to the posterior pharyngeal wall, tonsil recess, lateral wall, etc.

3. Wipe repeatedly for 3 ~ 5 times to collect mucosal cells.

4. Slowly take the swab out of the mouth, vertically put it into the virus preservation solution, break the tail of the swab, and tighten the sampling tube to avoid leakage.

5. Send to the laboratory for testing as soon as possible.

Swab flocked matters needing attention:

1. The swab shall be placed vertically in the sampling tube, and shall not be wiped to the bottle mouth to avoid pollution.Viral Transport Medium.flocked swab copan.

2. It is best to send it or send it to the laboratory for inspection on the day of sampling.

3. Before submission for examination, it must be verified that the specimen is consistent with the submission form. The appearance of the sampling tube must clearly write the patient’s name and basic information.

4. The submitted samples must submit (or submit the electronic version in advance) screening information form, inspection form and other materials.

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

China Sterile Flocked Swab Factory and Manufacturers

Posted on 2021年9月20日2022年3月22日 by Dr. Lee

China Sterile Flocked Swab GMP Factory and Manufacturers.

Cell medical (Dongguan) Co., Ltd. specializes in producing flocked swabs. Such as pharyngeal swabs, nasopharyngeal test swabs, oral swabs, nasal swabs etc.

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

Our GMP Factory-We support custom production, OEM

·OEM / ODM: support

·Certificate: CE / FDA / ISO certification

·GMP factory: Yes

·Supply capacity: 500000-1000000 pieces / month

·Size: 150mm

Sterile Flocked Swab flocked swabs manufacturers

The DNA extraction flocked swab produced by our company is made by nylon fiber flocked technology. The front end is coated with nylon short fiber fixed vertically. There is no absorption hole in the whole collection swab collection area, and the DNA cells will not disperse and remain in the fibers, which is conducive to faster and more efficient elution.

Independent sterilization packaging.

The benefits of flocked swabs for COVID-19 viral collection.

1. Sample collection process: The unique structure of the front end of the flocking swab can greatly increase the number of samples collected.

2. Sample dissolution process: The brush-like layer structure can release almost all collected samples. There are more advantages for the collection of trace DNA.

3. According to different analysis items, the corresponding soft or brush texture swabs have reached the maximum collection.

4. Disposable sterile sampling swab rod with breaking point.Learn more

5. Flocked swab technology improves the adsorption/release of samples and the sensitivity of the analysis.

6. The front flocked swab sampling is more precise and suitable for extracting more cells from the nasopharynx.

7. Packed in a transparent plastic tube to avoid biological pollution.

In short, the upright nylon fibre is like a soft brush, which can collect more cell samples. The capillary action between nylon fibers enhances the load of aqueous samples, and the samples are concentrated on the surface of the swab, which is easier to elute. Nylon flocking swab can absorb and release more samples.

Cell medical (Dongguan) Co., Ltd. –China Sterile Flocked Swab Factory and Manufacturers.

Email:flockedswabs@gmail.com