Influenza A, Influenza B and Respiratory Syncytial Virus, NAA
Use
Detection of Influenza A, Influenza B, and Respiratory Syncytial Virus (RSV) to assist in the diagnosis of viral respiratory infections.
Special Instructions
Labcorp does not collect specimens for this test. Specimens should be collected at the healthcare facility where the patient is seen and sent to Labcorp using standard procedures. The test results are typically reported electronically, allowing for faster delivery. Turnaround time can vary based on demand and transport duration.
Limitations
This test was developed by Labcorp and has not been cleared or approved by the FDA. Factors such as viral genetic variability or interference by substances inhibitory to PCR can affect the test's performance. In certain cases, additional confirmatory testing may be required.
Methodology
PCR-based (NAA)
Biomarkers
LOINC Codes
- 76091-8
- 76089-2
- 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
Nasopharyngeal (NP) swabs accepted in viral transport medium or saline
Collection Instructions
For NP samples, use a separate NP swab submitted in viral transport medium (discard OP swab included). For swabs in saline, OP, NP, or anterior nasal swabs may be placed in 1 to 3 mL of sterile saline in a sterile screw cap container.
Storage Instructions
Frozen at -20° C (preferred). Refrigerated specimens acceptable if received within 72 hours of collection, and room temperature specimens acceptable if received within 24 hours.
Causes for Rejection
Improperly labeled, grossly contaminated, broken or leaking transport devices; specimens with calcium alginate tips, preservative swabs, or wooden shafts; dry swabs without media; specimens in glass containers; specimens with inhibitory substances including heparin, hemoglobin, ethanol, EDTA concentrations >0.01M.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 24 hours |
| Refrigerated | 72 hours |
| Frozen | -20° C, no limit |