The nucleic acid test shows that you may have registered before, for example, through other channels or platforms, or someone else may have registered for you. Of course, it may also be caused by data errors.

The whole process of nucleic acid detection includes sample collection, storage, transport and sample detection.

1. Sample collection: Before nucleic acid detection, you need to register and check the information of the sampled person, and then collect the sample. For the large-scale collection of Covid-19 nucleic acid samples, oropharyngeal swabs and nasopharyngeal swabs are usually used, that is, swabs are used to wipe the pharynx and tonsils to take out the secretions of the sampled human respiratory tract for pathogenic examination.

2. Sample preservation: After sampling, drop the swab head into the liquid in the collection tube, screw down the tube cover, put it in a plastic sealed bag and seal it tightly. After checking that the information is correct, put the specimen into a special specimen transfer box with biohazard identification, keep the specimen upright and seal the transfer box.

3. Sample transfer: transported by special sample transfer personnel. The samples are sent to the laboratory within 4 hours after collection, and those that cannot be sent for inspection immediately can be stored in a refrigerator at 4℃ for 24 hours.

4. sample detection: professional and technical personnel extract the nucleic acid from the sample, enter the reagent system for amplification, and then carry out computer detection.

5. Read the results. Wait for the machine to give a report.