The antigen is usually the neocoronavirus antigen, and if the patient is tested and the results are judged within the allotted time, the presence of two bars at this point indicates a positive result. If the result is not read within the specified time, it does not indicate a positive result. If the results of the test paper are judged within 15 to 20 minutes after the NeoCVA test is performed, if the C and T areas on the top of the test paper appear red and two red bars appear at this time, it means that the result of the NeoCVA test is positive. Two bars may also appear if the results are not judged within 15 to 20 minutes after the New Crown Virus Antigen test, which indicates that the New Crown Virus Antigen test result is invalid, and therefore does not indicate a positive New Crown Virus Antigen test result. The presence of two bars after the test requires prompt medical attention, and the doctor will determine on a case-by-case basis whether the exposure is positive.