• Is fasting required before taking the respiratory swab for this test?

No, fasting is not required for this laboratory test.

• Does a negative PCR result always rule out an Influenza A infection?

A negative result in the presence of strong symptoms does not completely rule out infection, especially depending on timing.

Medical Laboratories

Influenza A Virus PCR Test

Qualitative Influenza A Virus PCR Test

Discover the cause of your respiratory symptoms accurately with the Influenza A test, guiding you to the correct treatment and limiting the spread of infection.

Trusted medical contentUpdated: 04-09-2026Views: 59LHL-2403

About this service

Highly sensitive qualitative molecular test using Real-Time Polymerase Chain Reaction (Real-Time PCR) technique to detect RNA of Influenza A Virus in respiratory samples. Usually performed on nasopharyngeal or nasal swab, or lower respiratory samples (like sputum). Gold standard for diagnosing influenza A infection due to high accuracy and ability to detect virus in early disease stages.

Conditions and notices

Fasting is not required

Fasting is not required. The sample is a respiratory swab.

The sample is best collected within the first 3–4 days of symptom onset, when the viral load in the respiratory tract is at its peak.

The swab (nasopharyngeal or nasal) should be collected by a trained healthcare professional using appropriate sterile equipment to ensure sample quality.

The sample should be transported to the laboratory promptly or stored at appropriate temperatures (usually 2–8°C) to prevent viral RNA degradation.

Frequently Asked Questions

Short answers to the FAQs published with this service.

• Why is prompt diagnosis of Influenza A clinically significant?

Early diagnosis guides treatment decisions, particularly the administration of antivirals within 48 hours of symptom onset for maximum benefit.

• Which groups are prioritized for Influenza A testing due to complication risks?

Priority groups include adults over 65, young children, pregnant women, and patients with chronic illnesses or weakened immune systems.

• Can this test distinguish Influenza A from other respiratory conditions?

Yes, it differentiates Influenza A from other respiratory diseases with similar symptoms, such as COVID-19 and RSV.

• What symptoms indicate a need for an Influenza A PCR test?

Influenza A Virus PCR Test

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Conditions and notices

Frequently Asked Questions

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