This article
To talk to you in detail
Covid nucleic acid test!
But in the face of the “nucleic acid swab test”
This unfamiliar and familiar word
Do you have many questions?
Do you want to do a nucleic acid test when you go back?
Will it be difficult to make an appointment for nucleic acid testing?
How long does it take to get the results of a nucleic acid test at the hospital?
Should I Swab My Throat or Nose for Rapid COVID-19 Tests?
To answer your questions.
Today.
I’m going to tell you.
Those things about nucleic acid testing.
01. What is nucleic acid detection?
At present, nucleic acid detection is the main method for laboratory diagnosis to determine whether a patient is infected with the new coronavirus. It can achieve early detection, early diagnosis, and early treatment. Real-time fluorescent PCR can be used to detect throat swabs, sputum or blood samples. to covid nucleic acid, or detected by viral next-generation gene sequencing.
simply put
Nucleic acid testing is done by
After collecting human secretions
Tested by the instrument
to see if we have the new coronavirus in our body
If so, the test result is positive
On the contrary, if it doesn’t, it’s negative.
02. How to test the COVID swab?
“Sir, oropharyngeal swab, nasopharyngeal swab, and anal swab, which one to choose?”
How do you do a nasopharyngeal swab?
Nasopharyngeal swabs must be performed with the patient sitting upright with the head in an upright position, as this allows for easy visualization and access to the nasal floor perpendicular to the central axis of the patient’s face.
Flocked Tip Swab Nylon Sterile Nasal Swab Stick
Insert the swab into the patient’s nose and align it parallel to the nose and the base of the septum. As long as there is no obstruction in the nasal cavity, the swab continues to move in this direction until it reaches the nasopharynx, at which point the tester feels resistance.
Once the swab reaches the nasopharynx, a gentle rotation and two complete 360-degree rotations are recommended to allow secretions from this area to be absorbed.
Once the swab is removed from the patient’s nose, it is immediately inserted into a viral sample containing a viral transport medium. The handle of the swab extending through the opening of the vial was broken off to allow the tube to be closed.
So
Now that there are oropharyngeal swabs and nasopharyngeal swabs
Why add anal swabs?
To answer your questions
Let’s take a look at their respective advantages and disadvantages
The specific operation of the anal swab is as follows:
Soak a flocked swab in saline, insert it 2-3 cm into the anus, wipe from the folds around the anus, or rotate it gently inside the anus, and insert it into a test tube containing saline.
For fecal swab cultures, all of the above requires the use of sterile equipment and placing the swab in a sterile tube.
So
Now that there are oropharyngeal swabs and nasopharyngeal swabs
Why add anal swabs?
To answer your questions.
Let’s take a look at their respective advantages and disadvantages.
Oropharyngeal swab: relatively simple to operate, less irritating, suitable for large-scale screening. Therefore, the nucleic acid test of oropharyngeal swabs is mainly used in the screening of new coronary pneumonia for the epidemic-related population, which is used in the routine nucleic acid test clinic of the First Affiliated Hospital of NTU.
Nasopharyngeal swab: The technical requirements are high, the human body does not feel comfortable, and the accuracy rate is higher than that of the oropharyngeal swab. However, for some asymptomatic or mildly infected people, the condition recovers quickly after infection, and the pharyngeal nucleic acid may not be detected in 3 to 5 days.
Anal swab: high accuracy, reduce missed diagnosis. The study found that the duration of nucleic acid-positive feces or anal swabs of some infected persons is longer than that of the upper respiratory tract. Therefore, anal swab tests will be carried out for key groups such as isolation points or some imported overseas.
In conclusion.
The three swabs have different lengths.
If you have to test an anal swab.
Don’t be shy.
Whatever the swab,
It is a good swab that can accurately identify the virus.