Nucleic acid testing for NeoCrown is usually available 24 hours, but not 48 hours after NeoCrown vaccination. Nucleic acid testing for New Crown virus is usually available 24 hours a day. As long as there is no history of throat infection or other medical conditions that make nucleic acid testing unsuitable, testing can be performed at the nearest nucleic acid testing sampling site at any time, and with the current advocacy of normalized nucleic acid testing, it is recommended to respond to the call to follow the prescribed time for testing. However, there is one situation in which nucleic acid testing should not be performed: within 48 hours of vaccination with the New Crown vaccine. Since the vaccine contains inactivated neocollins and other components that may lead to a positive result, and the person to be tested is not infected with neocollins, the nucleic acid test cannot be performed, and the test should be performed after the 48-hour interval has elapsed.