Influenza A, Influenza B and Respiratory Syncytial Virus, NAA

Casandra

Casandra Test Code LC16336Version 1 (DRAFT)

Performing Lab

Lab LabcorpLab Test ID 140163CPT Code 87631

Influenza A, Influenza B and Respiratory Syncytial Virus, NAA

Clinical Use

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.

Test Details

Methodology

PCR-based (NAA)

Biomarkers

Influenza A

Microorganism

Influenza A, NAA • Other • Binary (Detected / Not Detected)

Influenza B

Microorganism

Influenza B, NAA • Other • Binary (Detected / Not Detected)

Respiratory Syncytial Virus

Microorganism

RSV, NAA • Other • Binary (Detected / Not Detected)

LOINC Codes

Order Codes

76091-8

Result Codes

76089-2
76078-5
76080-1

Result Turnaround Time

2-4 days

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.