Antigen testing is divided into five steps, pre-test preparation, sample collection, antigen testing, result determination, and waste disposal. 1. Pre-test preparation: Read the instructions carefully, check the integrity of the reagents and whether they are within the expiration date, and then wash your hands with water or disinfectant. 2. Sample collection: Tilt your head back, avoid touching the swab head with your hands, and allow the nasal swab to fully sample inside the nasal cavity. 3. Antigen Detection: Place the nasal swab in the sampling tube, mix thoroughly, and then drop the liquid obtained into the sample hole of the test card for detection. 4. Determination of results: Read out the results according to the instructions. 5. Disposal of waste: all used test cards, swabs, sampling tubes, etc. should be put into a sealed bag in accordance with the treatment of medical waste.