Does nucleic acid testing involve drawing blood? How is nucleic acid testing for COVID-19 performed?

Generally, nucleic acid tests in hospitals involve blood tests, and the results can be obtained on the same day. If you feel that you are suspected of being infected with the new coronavirus, you can go to the hospital for a check-up, which is a responsible behavior for yourself and your family. Next, let's take a look at how to do nucleic acid testing, hoping to help everyone.

Does nucleic acid testing require a blood draw?

Blood is acceptable, and other specimens are also acceptable, such as urine, throat swabs, etc., as long as they are body fluids.

The new coronavirus can be divided into two parts, one is the viral genome and the other is the viral protein shell. The replication of the virus can also be divided into two parts, one is the replication of the viral genome and the other is the replication of the viral protein shell.

Our detection process is to simulate the replication of the virus genome. It can be equivalent to producing part of the virus genome. The template of its production process is the virus genome. If there is no virus, we cannot produce it.

At the same time, the raw materials we use for production can make the produced fragments glow, allowing us to detect them.

How to test the nucleic acid of COVID-19

The nucleic acid detection of the new coronavirus is relatively complicated. qRT-PCR is only one of the steps.

It takes about 9 steps from sample collection to the final test conclusion (see the figure below).

Pre-testing: Sample collection, storage and transportation before testing

Testing: Testing in the PCR laboratory. From sample receipt, sample inactivation, nucleic acid extraction, machine testing (that is, RT-PCR) result analysis, etc., if there is no problem with the amplification curve.

After the test: If there is no objection to the inspection results, they will be reviewed and audited and a report will be issued. If the results fall into the gray area or the test fails, re-sampling is required for testing.

The original specimens of clusters of 5 or more cases of novel coronavirus pneumonia in each region should be sent to the China Center for Disease Control and Prevention for review and confirmation. Therefore, the detection time can be as short as a few hours or as long as many days.

Can the novel coronavirus only be detected by nucleic acid testing?

Novel coronavirus pneumonia. The main clinical manifestations are persistent high fever. Cough. General weakness and pain. Lung examination will also show obvious changes. Only a positive nucleic acid test can confirm the diagnosis. Your examination is normal. Now it is not considered that the lesion is caused by this pneumonia. Pay attention to rest at home. You can take common cold medicine orally. Anti-inflammatory drugs and symptomatic treatment are enough.

Related News

From 0:00 to 24:00 on March 2, 2020, Zhejiang Province had 7 new confirmed cases of novel coronavirus pneumonia (all of which were imported cases from Italy reported in Qingtian County, Lishui City), and 36 new discharged cases. Among them:

Among the newly discharged cases, there were 5 cases in Hangzhou, 2 cases in Ningbo, 9 cases in Wenzhou, 1 case in Huzhou, 1 case in Shaoxing, 2 cases in Jinhua, 2 cases in Zhoushan, 4 cases in Taizhou, and 10 cases in the Provincial Shilifeng Prison.

As of 24:00 on March 2, Zhejiang Province has reported a total of 1,213 confirmed cases of novel coronavirus pneumonia (including 8 imported cases), 8 severe cases (including 4 critical cases), 1 death, and 1,086 discharged cases.