WebMD: Better Information. Better Health.
  • Bookmark This Page
  • Site Map
  • Sign up for WebMD Newsletters

Cold & Flu Health Center

Select a topic to explore more.

Diagnosis & Tests

Font Size
A
A
A

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.

Most Popular Stories

WebMD Special Sections