Flu test strips are categorized into no bar, one bar and two bars, which represent different results.
1. No bar appears, meaning that the test paper does not show any obvious bar mark after the sampling or liquid drop operation. It means that the test result is invalid, probably because the sampling or dropping process is not standardized, and it is recommended to check the manual and carry out standardized operation.
2. One bar means that the test result is negative and no influenza virus infection has occurred. If the test result is accompanied by obvious cold symptoms, such as fever and cough, it is mainly considered as common cold.
3. Two bars, representing the test result is positive, has occurred influenza virus infection, but the test results of the test paper can only be used as a reference, but also need to consult a doctor in a timely manner, under the guidance of the doctor to carry out the relevant examination, to the hospital examination results shall prevail.