The self-test New Crown kit is relatively simple to use, and the results are mainly obtained by looking at the C, T bands displayed. Specific instructions are as follows. 1. If both C and T show red or purple bands, or the color of the band at T can be dark or light, it is a positive result. 2. A red or purple band at C, but no color band at T, is a negative result. 3. If a red or purple band is not shown at C, the result is invalid regardless of whether a band is shown at T or not. The result is invalid and the test strip should be retested. It is important to note that the results of the Self-Test New Crown kit are not 100% correct and cannot replace the results of the nucleic acid test. Nucleic acid testing is still used as the gold standard in clinical practice.