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HelpTest Code Flu A/B Influenza A and B Antigen Rapid
Aliases
Rapid Flu
Patient Preparation
Individuals who received nasally administered influenza A vaccine may have positive test results for up to 3 days after vaccination.
Special Collection Instructions
Visually bloody or overly viscous samples should not be used for testing.
Collection Method
Nasopharyngeal swab, nasopharyngeal aspirate/wash, Nasal swab
Container
Copan FLOQSwab
Preferred Specimen
Copan FLOQSwab
Acceptable Specimens
Please refer to the following flow chart for acceptable specimens
Reference or Target Ranges
Negative
Reportable Units
Positive/Negative
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold | N/A |
| Icterus Threshold | N/A |
| Lipemia Threshold | N/A |
| Other | QNS, contaminated, improperly Labeled, improper specimen type |
Specimen Stability
| Ambient | 72 hours in 1 mL of sterile saline |
| Refrigerated (4°C to 8°C) | 72 hours in 1 mL of sterile saline |
| Frozen(-40°C to 0°C) | N/A |
Performance Information
| Days and Time Performed | 24/7 |
| Expected Turn Around Time | Stat: 1 hour Routine: 4 hours |
| Stat Availability | Yes |
| Performing Bench | UH Chemistry, WCH Chemistry |
| Methodology/Method Description | Sofia 2 Influenza A & B FIA – Immunofluorescence technology that is used with Sofia and Sofia 2 to detect influenza virus nucleoproteins. This test allows for the differential detection of influenza A and influenza B antigens. |
Additional Information/Important Notes
A negative test is presumptive and it is recommended these results be confirmed by viral culture or an FDA-cleared influenza A and B molecular assay. Negative results do not preclude influenza virus infections and should not be used as the sole basis for treatment of other patient management decisions.
CPT Codes
87804 x2