Description
Why It’s Done:
• To check for past exposure to Influenza A virus.
• To determine immune status following infection or vaccination.
• Used in serological surveys and epidemiological studies.
• Sometimes used to support diagnosis in cases with a history of flu-like symptoms, when acute testing wasn’t done.
Note: This test is not used to detect current infection, as IgG antibodies take time to develop. For active infection, a PCR or rapid antigen test is preferred.
Preparation:
• No special preparation is required.
• A standard blood sample is drawn from a vein, usually in the arm.
• Patients should inform the healthcare provider about any recent vaccinations, infections, or immune conditions, which may affect the results.
