Influenza (flu) is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and lungs. Rapid influenza diagnostic tests (RIDTs) are immunoassays that can identify the presence of influenza A and B viral nucleoprotein antigens in respiratory specimens and display the result in a qualitative way (positive vs. negative). Influenza can cause mild to severe illness, and at times can lead to death. Flu symptoms usually come on suddenly. The best way to reduce the risk of flu and its potentially serious complications is by getting vaccinated each year.

Reimbursement Policy: 

McLaren considers RIDTs as lowest cost and should be utilized before any further testing or higher cost tests are performed. 

RIDTs are medically necessary for members (when flu has been documented in the community) who present with signs and symptoms of flu, which may include the following: 

• A measured fever of 100.4°F (38°C) or higher 
• Chills or a sensation of feeling feverish 
• Cough 
• Sore throat 
• Nasal congestion or runny nose 
• Muscle aches or generalized body pain 
• Headache 
• Fatigue or unusual tiredness 
• Vomiting and diarrhea, which may occur in some individuals, are more commonly observed in children than in adult 

Click here to read the full announcement from McLaren Health Plan.