Norovirus Detection, Real-time PCR

TEST: 138307
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CPT: 87798(x2)
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Synonyms

  • Human Calicivirus
  • Norwalk Virus

Expected Turnaround Time

4 - 5 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Related Documents

Specimen Requirements

Specimen

Stool

Volume

1 mL

Minimum Volume

0.2 mL (Note: This volume does not allow for repeat testing.)

Container

Sterile container or Para-Pak® Orange

Storage Instructions

Refrigerate. Samples in Cary-Blair medium (Para-Pak® Orange) can be kept at room temperature.

Stability Requirements

TemperaturePeriod
Room temperature

Sterile container: 7 days;

Cary-Blair medium: 5 days

Refrigerated

Sterile container: 7 days;

Cary-Blair medium: 14 days

Frozen

Sterile container: 7 days;

Cary-Blair medium: Unstable

Causes for Rejection

Quantity not sufficient for analysis; specimen too old; leaking or broken tube; frozen sample in Cary-Blair medium (Para-Pak® Orange)

Test Details

Use

This test is intended to be used as an aid in the diagnosis of infections caused by noroviruses, and to differentiate viruses belonging to Norovirus genogroup 1 (eg, Norwalk virus) and from those belonging to Norovirus genogroup 2 (e.g., Snow Mountain agent).

Limitations

This test was developed and its performance characteristics determined by Labcorp. It has not been cleared or approved by the Food and Drug Administration.

Methodology

Real-time reverse transcriptase polymerase chain reaction (RT-PCR)

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