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Laboratory: Clinical Microbiology
Test Name:
Test Code: INRV
Clinical Information:
Test Indications:
Influenza-like illness defined as fever and cough or suspected bronchiolitis in patients seen in the emergency department or admitted to hospital for which a diagnosis of influenza or RSV will impact management (use or discontinuation of antiviral treatment or for infection control purposes).

Generally, testing should only be requested during typical influenza and RSV season (October to April), however testing is available year-round. Outside of season, testing should be limited to patients with a highly compatible syndrome or compatible syndrome with a travel history to tropical or southern latitudes or if an atypical influenza/RSV season is expected. A nasopharyngeal swab must be obtained for this test. Throat swabs or nasal swabs are not acceptable. Nasopharyngeal aspirates and sputa ARE NOT suitable for this test and will be forwarded to a reference laboratory. Only individuals comfortable with obtaining a nasopharyngeal swab should obtain the specimen. Improper collection may result in false negative results.

Patient Preparation Instructions:
Accurate patient identification must be made prior to sample collection. Samples and requisitions must be labeled/completed in accordance with the Shared Health Specimen Acceptance Policy.
Nasopharyngeal swabs may be uncomfortable and patients should be advised of this.
Collection Devices:
Preferred Device:
1 - Nasopharyngeal Swab - Adult

Nasopharyngeal Swab - Adult

Catalogue #:
 - Nasopharyngeal swab in virus transport medium (VTM) or nasopharyngeal swab in Copan universal transport medium (UTM).
Alternate Device:
1 - Nasopharyngeal Swab - Pediatric

Nasopharyngeal Swab - Pediatric

Catalogue #:
 - Nasopharyngeal swab in virus transport medium (VTM) or nasopharyngeal swab in Copan universal transport medium (UTM).
Specimens received in other collection devices will not be processed.
Specimen Required: Nasopharyngeal swab only.
Reference Values:
Negative for influenza A, B and RSV
See Also:
More Information:
Specimen Handling:
VTM should be stored frozen until ready to use.  Thaw and store in the fridge before use.  After collection of specimen, transport to laboratory as soon as possible at 4°C with a cold pack. Ensure specimens are sent using appropriate packaging in accordance with Transportation of Dangerous Goods Regulation.