Antigen test generally refers to the New Coronavirus antigen test, which usually produces results in about 10-15 minutes, but may vary due to different brands of antigen test kits, and it is recommended that the results be determined according to the instructions. Antigen kits usually drop the sample solution into the test card, and the band change can be seen after a few minutes, and after the band is stabilized, the result can be determined. It takes approximately 10-15 minutes from the time the sample solution is added to the time the result stabilizes. It is during this time that the results are most accurately interpreted. It is not the case that the longer the antigen reaction takes, the more accurate the result will be. If the specified time is exceeded, non-specific stray bands may appear, which will have a negative impact on the accuracy of the result, and if the reaction time is too short, it may also result in the card not being displayed, so it is recommended that the time required for the results be determined in strict accordance with the instruction manual.