Use a rapid influenza diagnostic test with a nasal or throat swab
Use a molecular PCR test for more accurate detection
Collect the sample from the nose or throat as directed by a healthcare professional
Test early in the illness, ideally within the first 1 to 4 days of symptoms
Have a clinician interpret the result in the context of symptoms and exposure
Repeat or confirm a negative rapid test with PCR if flu is still suspected
Seek medical evaluation if symptoms are severe, worsening, or in a high-risk person