Cold & Flu Health Center
Select a topic to explore more.
Diagnosis & Tests
Got the flu and wonder if you should call the doctor? Learn when to call the doctor about flu symptoms and how specific tests can detect flu viruses.
Diagnosis
Do you know when to call the doctor about flu? Learn more about flu symptoms and flu tests.
Tests
Symptoms aren’t always enough to diagnose the flu. Additional tests might be necessary. Here are details.


