Antigen test generally refers to the new coronavirus antigen test, and results may not be accurate if observed for more than one hour. Neocoronavirus antigen test is mainly used to detect whether the body is infected with the new coronavirus, and the results are usually available in 15-20 minutes. Currently, the validity period of antigen test results is about 30 minutes, so testers observing the results after more than one hour may have inaccurate results due to the failure of the reagent kit, thus affecting the initial diagnosis and treatment. To ensure the accuracy of the Neocoronavirus antigen test results, the test should be performed in strict accordance with the instructions, and random movement of the kit should be avoided. Due to the limited sensitivity of the new coronavirus antigen test, abnormal test results should be reported to the community or go to a regular hospital for nucleic acid testing to confirm whether the patient is suffering from new coronavirus pneumonia. People are advised to take protective measures, such as opening windows and windows frequently, exercising appropriately, etc. They should also avoid contact with other people to prevent infection with the new coronavirus. Pay attention to timely observation of the new coronavirus antigen test results, when the results are abnormal to adjust the state of mind, to avoid excessive tension, anxiety. Tips] The term “new coronavirus pneumonia” and “new coronavirus pneumonia” mentioned in this article have been renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.