Can an antigen test detect influenza A?
Mar 09, 2025
Source: Cainiu Health
Dr. Ren Yi
Introduction
Influenza A refers to Influenza Type A. Ordinary antigen tests may not accurately detect Influenza Type A; however, it can be detected using specialized Influenza A antigen test kits. In daily indoor environments, windows should be opened regularly for ventilation—at least 2 to 3 times per day, each time for 20 to 30 minutes. This can effectively reduce the concentration of viruses indoors and lower the risk of infection.
Generally speaking, "Jia Liu" refers to influenza A. Influenza A is difficult to accurately detect using ordinary antigen tests, but it can be detected using specialized influenza A antigen detection kits. The specific analysis is as follows:
Antigen tests, such as the SARS-CoV-2 antigen test, detect specific antigens of the coronavirus, which differ from the antigens of the influenza A virus, thus making it impossible to detect influenza A. In contrast, specialized influenza A antigen test kits utilize the principle of specific antigen-antibody binding to detect the presence of specific influenza A viral antigens in the sample. If the corresponding antigen exists in the sample, the test kit will display a positive result, indicating a possible influenza A infection. However, antigen testing can be affected by multiple factors, such as improper sampling and low viral load, which may lead to false-negative results. When necessary, additional diagnostic methods such as nucleic acid testing should be used to confirm the diagnosis.
Normally, in indoor environments, windows should be opened for ventilation at regular intervals—preferably 2–3 times daily, each time for 20–30 minutes. This practice can effectively reduce the concentration of viruses indoors, lower the risk of infection, maintain fresh and well-circulated indoor air, and create a healthier environment for respiratory health.
