The NeoCrown Self-Test refers to the NeoCrown Pneumonia Virus Antigen Self-Test Kit testing process, c refers to the control position, and t refers to the test position. There are usually two marking positions, c and t, on the test card, where the c position is the control position, and the t position is the test position, which is used to determine the test result. First of all, only when there is a clear band in the c position can the test be considered valid, if there is no band in the c position, then the test is invalid. If there is a clear band at c, the test is considered positive if there is a band at t, and negative if there is no band at t. It should be noted that test results must be interpreted within the specified time, and results interpreted shorter than or beyond the specified time are considered inaccurate. Tip: “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.