How long does the nucleic acid test produce results

How long does the nucleic acid test produce results

From 2019 so far, the most contacted is the epidemic situation and nucleic acid testing. There are many friends who want to go out to play, so recently many people are asking how long the nucleic acid test will take before the results come out. Come today. Everyone talk about it.

Issued the test report can be within half an hour after the online nucleic acid test?

There are rumors on the Internet that “the new crown nucleic acid test can produce results in half an hour”, “the new crown test takes only ten minutes” and “the nucleic acid test can also be done at home”…There are different opinions, and the editor found some information. Let’s take a look at the process and steps that need to go through from the beginning of the detection to the completion of the results.

Listen to what the experts say:

Staff of Guangdong Provincial Center for Disease Control and Prevention: The nucleic acid test for the new coronavirus is first to collect throat swabs and nasal swabs or virus samples, and then conduct laboratory tests.

The laboratory of the Guangdong Provincial Center for Disease Control and Prevention’s Viral Disease Prevention and based Control Institute is on the national plan for the nucleic acid test of the new coronavirus , used The method is real-time fluorescent RT-PCR.

For this method, half an hour is impossible. The well operation time of this experiment also takes about 2-4 hours.

Usually ，understood these 2-4 hours are the operating time of a single sample. Laboratories usually perform batch specimen operations, usually sending hundreds of specimens for inspection at a time.

In terms of the general laboratory scale of a prefecture-level city, the entire process of 500 tests takes 8-10 hours.

Chen Shuhong, deputy director of the Virus Prevention and Control Institute of the Heilongjiang Provincial Center for Disease Control and Prevention: The whole process refers to an ideal laboratory operation process, which refers to a one-time success; for difficult specimens, repeated testing and even specimen collection are required. Then it will take longer. Laboratory testing: specimen processing, nucleic acid extraction, PCR amplification, report issuance. “Four steps” takes time. After receiving the samples, the experimenters classify, verify and preprocess the samples. “Our testing and testing are usually batch testing, one or two hundred samples. First, it may take 2 to 3 hours to check and calibrate the samples. Sometimes there are some special samples that need to be processed in advance. Then one or two hundred It takes 3 to 4 hours to process a specimen.”

Experts said that the report will be available the next day at the earliest:

Experts said that the nucleic acid extraction process really started after this “whole process”. After nucleic acid extraction, required the PCR amplification , which also takes 80 to 120 minutes.

After the PCR is over, the result is determined , the data is checked , and the report issued

So this is also the test report issued by most hospitals or testing institutions ，will not notify the tested personnel to take the report the next day.

There are also some hospitals that uploaded are to the WeChat of the mobile phone or downloaded and viewed on the APP.

The long holiday is approaching. According to the requirements of the epidemic situation, if you do not go out to high-risk areas outside the province, you do not need to do nucleic acid testing. Generally, it is enough to pass the “temperature measurement + health green code”.

Before going out to work or do other things, you must deal with people in accordance with relevant requirements

Examined the scope of “Persons to be” includes:

① Suspicious symptoms such as fever;

② The person or family members are close contacts;

③ within 14 days, the person or his family members have a history of residence and contact with the risk level area of ​​the final draft of the epidemic (including overseas);

④. An epidemic has occurred in the community (village) where you live within 21 days.

Remind friends who want to go out to play:

①, wear a mask, travel with a green code,

②, healthy travel,

③Do a good job of travel protection,

④ Pay attention to food hygiene,

⑤ Make a record of itinerary,

⑥ Maintain awareness of protection at all times and do a good job of self-health monitoring.