"Omikron" is coming
A negative nucleic acid test report
Become a necessary "passport"
From "poking your throat in the eye" to getting the report
What exactly is the link
Step by step to tell you
Step 1 Specimen collection
Everyone understands this step, "poking the throat and eyes" and "poking the nose and eyes". After collection, the swab head is immersed in the virus preservation solution for preservation, and the swab group is usually stored in a group of 10 swabs in the citywide screening.
Step 2 Collection Transfer
In citywide screening, nucleic acid sampling sites are usually temporary sampling points such as communities and schools, and testing points are laboratories with strict biosecurity and quality requirements. Therefore, nasal and throat swabs are collected at the sampling point and sent to the laboratory "fully armed".
Step 3 Nuclear disinfection
Under close protection, specimens are "escorted" to the testing laboratory, where they are registered and checked by the receiving personnel.
All-round disinfection, ready to enter the testing process.
Step 4 full protection
Before entering the sample processing area, the testing personnel need to achieve 100% safety protection.
Step 5 Information entry
Staff who have completed comprehensive protection enter the sample processing area, open the sample in the biosafety cabinet, remove the sample for disinfection and enter it into the information system. At present, there are two kinds of information entry, one is bar code entry, which needs to be solved by "drop"; the other is a manually filled out list, which needs to be extracted into the system one by one.
Step 6 Reagent preparation
According to the number of samples to be tested, the reagents and auxiliary materials necessary for nucleic acid detection are configured, and the reaction system is accurately prepared and packaged. To improve efficiency, this step and the next two steps are usually performed simultaneously by different inspectors.
Step 7 Nucleic acid extraction
The nucleic acid of the new crown virus is the RNA wrapped inside the protein, which needs to destroy its external protein structure and "catch" the viral RNA for detection. In this process, a group of inspectors unscrew tens of thousands of lids a day and absorb tens of thousands of specimens.
Step 8 Nucleic acid amplification
Since the amount of viral nucleic acid contained in the sample is too small to be detected, it is necessary to make the nucleic acids more and more through continuous replication, a process called nucleic acid amplification.
As the amplification program runs, the NEW CROWN nucleic acid fragments are continuously synthesized, and the luminescent genes are fluorescent, which can be detected by the instrument.
During the testing process, you can not stop to add new specimens, you must wait for this batch of amplification to be completed before you can carry out the next batch of amplification, which is one of the reasons why the specimens cannot be followed by inspection. In a large laboratory, there are hundreds of nucleic acid amplification equipment and hundreds of inspectors working non-stop.
Step 9 Post-inspection processing
To prevent possible contamination, the samples are sealed in designated medical bins after the test is completed and autoclaved.
Step 10 Results are out
At this step, the tester also needs to view the results, check the script information, upload the data, and then process and publish it by the big data platform, so that everyone can query the nucleic acid test results online!
Source: Xinhua News Agency
Guangzhou Daily New Flower City Editor: Su Wanqian