Influenza A, B, Test kits are used in physician offices and medical clinics to test for antibodies against the viruses that cause influenza A or B. Influenza A and B test kits are important for physicians to confirm the diagnosis of influenza A and B and for devising strategies to prevent spread of the disease. The point-of-care tests are important for use in family practice and general internal medicine practices where physicians care for large numbers of at-risk patients.