The results may affect treatment decisions.
During a confirmed flu outbreak, though, testing may not be needed even if
treatment with an antiviral medicine is being considered.
addition to flu-like symptoms, you have any unusual symptoms that suggest
Health authorities have not identified any other
cases of flu in your area.
Testing may involve blood tests (rarely used) or a
culture to identify the virus. Some cultures take 24
to 48 hours for results, so they will not help your doctor decide whether to
prescribe an antiviral medicine. A rapid flu test is now available that gives
results in 30 minutes. Although this test is not 100% accurate, it can be
useful when deciding whether to use an antiviral medicine.