1. What is antigen detection and screening?

Clinical judgment of whether the virus invades the human body, the main problem can be effectively applied to the study of nucleic acid detection, antigen detection and antibody detection of three different ways need to be carried out,Rapid antigen nasal swab which nucleic acid detection and antigen detection students can be directly affected by the detection system virus. Antigen detection is mainly companies by improving the detection of network virus antigen, nucleic acid detection is mainly due to the detection of the genes of the virus, while the antigen for the shell of the virus, can be more easily detected. Compared with the results of nucleic acid detection, antigen detection develops faster and operates more conveniently, but at the same time the accuracy will be lower. Therefore antigen detection data can be widely used for early screening of various new coronavirus infections, which can provide help them to find out their infection managers as early as possible, and be more conducive to epidemic prevention and control.

After the discovery of this omicron variant strain, the virus spread rapidly and increased the number of carriers in a short period of time, making prevention and control of outbreaks more difficult. Antigen testing, as a supplement to screening, allows for faster screening of suspected infections and allows residents to perform their own tests at home, which helps reduce the pressure on hospitals to perform nucleic acid testing. Positive antigen results can be used for early triage and rapid treatment of suspected populations, but it should be noted that antigen testing is not a substitute for nucleic acid testing, which remains the basis for confirming coronavirus infection.

For people with positive antigen test results, regardless of whether they have symptoms such as cough or fever, they should go to the local designated medical institutions for nucleic acid testing after taking relevant isolation measures, and whether they are infected or not is based on the results of nucleic acid testing.

2. What are the considerations for conducting antigen screening?

Before antigen testing and screening, one should read the instructions carefully and fully understand their contents before doing so. In general, antigen testing and screening requires five steps: pre-test preparation, sample collection, antigen testing, result comparison and waste disposal. The steps of antigen testing and screening are complex and should be strictly followed to prevent the accuracy of the results from being affected.

Pre-test preparation: Before performing the relevant antigen detection and screening, hands should be washed using corporate running water and hand sanitizer, and the work instructions should be read through careful analysis.

Sample collection: Note that to re-collect, a nasal swab should be inserted 1-1.5 cm deep into the nasal cavity and then rotated at least 4 times against the nose.

Antigen Detection: Place the nasal swab after sample collection in a sampling tube and swirl it in the preservation solution for more than 30 seconds, then discard the swab, cap the tube and drop the liquid into the sample hole of the test card.

Results Control: Wait 15 minutes for results, and observe the results according to the comparison instructions, e.g., Positive result: red or purple band at C and T; Negative result: purple or red band at C, no color change at T; Invalid result: red or purple band at C, regardless of the color change at t.

Waste Disposal: Regardless of the test result, all used items should be placed in a compact bag and handed over to the appropriate management for disposal.