Influenza A and Influenza B, NAA
Use
Detection of Influenza A and Influenza B to assist in the diagnosis of viral respiratory infections.
Special Instructions
Labcorp does not collect specimens for this test. Patients should have specimens collected at the healthcare facility where the test was ordered, then sent to Labcorp using standard procedures. Results are typically reported electronically, which facilitates quicker delivery. Times may vary based on factors like demand and specimen transport duration.
Limitations
This test was developed and its performance characteristics determined by Labcorp but has not been cleared or approved by the Food and Drug Administration (FDA). Potential limitations include possible non-detects due to variations in viral load, timing of specimen collection, or presence of substances inhibitory to PCR. Stability of samples and use of proper collection methods are crucial for accurate results.
Methodology
PCR-based (NAA)
Biomarkers
LOINC Codes
- 76078-5
- 76080-1
Result Turnaround Time
2-4 days
Related Documents
For more information, please review the documents below
Specimen
Nasal Swab
Volume
1 - 3 mL
Minimum Volume
1 mL
Container
swabs in viral transport medium or saline
Collection Instructions
For NP samples: Use a separate NP swab in viral transport medium (discard OP swab in medium). For nasal swabs: Use swabs placed in 1-3 mL saline. Avoid calcium alginate tips or wooden shafts.
Storage Instructions
Frozen at -20° C (preferred), refrigerated and room temperature samples acceptable within specific timeframes.
Causes for Rejection
Improper containers such as vacutainers/pop-top tubes, wooden shafts, samples over time limits, and inhibitors to PCR like heparin.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 24 hours |
| Refrigerated | 72 hours |
| Frozen | no limit |