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Test Code LNORO Norovirus PCR, Molecular Detection, Feces

Secondary ID


Useful For

Diagnosis of gastrointestinal disease (diarrhea or vomiting) caused by norovirus genogroups 1 and 2


This test should not be used as a test-of-cure.

Method Name

Real-Time Polymerase Chain Reaction (PCR)/RNA Probe Hybridization

Reporting Name

Norovirus PCR, F

Specimen Type


Shipping Instructions

Place vial in a sealed plastic bag and ship ambient. Specimens received at other temperature will be rejected.

Specimen Required

Supplies: C and S Vial (T058)

Container/Tube: Commercially available transport system specific for recovery of enteric pathogens from fecal specimens (15 mL of non-nutritive transport medium containing phenol red as a pH indicator, either Cary-Blair, Para-Pak Culture and Sensitivity Media)

Specimen Volume: Representative portion of diarrheal fecal sample, 1 gram or 5 mL

Collection Instructions:

1. Collect fresh feces and place in preservative within 1 hour of collection.

2. Visibly formed feces are not consistent with Norovirus gastrointestinal disease and should not be submitted for testing.

Specimen Stability Information

Specimen Type Temperature Time Special Container
Fecal Ambient 7 days

Reject Due To

Nonpreserved feces Transport media other than Cary-Blair or C and S Fecal swabs Visibly formed feces Frozen specimen Reject

Reference Values


Day(s) and Time(s) Performed

Monday through Friday

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

87798 x 2

LOINC Code Information

Test ID Test Order Name Order LOINC Value
LNORO Norovirus PCR, F 88701-8


Result ID Test Result Name Result LOINC Value
65170 Norovirus G1 PCR 54905-5
47553 Norovirus G2 PCR 54906-3