Test Overview

Test Methodology

Polymerase Chain Reaction (PCR)

Test Usage

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

Reference Range*

Negative

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

A negative result does not exclude norovirus infection.

Test Details

Days Test Performed

Monday - Friday

Analytic Time

2 - 3 days

Soft Order Code

LNORO

MiChart Code

Norovirus Antigen (Sendout)

Synonyms

Synonyms

FNLV
Norwalk Virus, Stool
Norwalk-Like Virus (NLV)

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Laboratory

Sendout

Laboratory Reference

Mayo LNORO

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Specimen Requirements

Offsite Collection Instructions

Collect fresh random stool specimen. Add stool specimen to transport vial until liquid reaches fill line. Emulsify specimen thoroughly in transport fluid. If necessary, place a urine bag on the patient to prevent urine contamination.
Acceptable specimens are stool sent in Stool Culture transport (orange cap) (Cary Blair) or Para-Pak Culture and Sensitivity Media. Store and send at room temperature. If an outbreak of norovirus is suspected, specimens should be sent to the Michigan Department of Health & Human Services (MDHHS) for testing. Contact the MDHHS Bureau of Epidemiology at 517-335-8165 to obtain testing approval and necessary instructions prior to sending samples. Note that specimens sent to MDHHS should be stored refrigerated. Mayo specimens should be maintained at room temp.

Normal Volume

Representative portion of diarrheal stool, 1 gram or 5 mL

Additional Information

Test sent to Mayo Medical Laboratories. If an outbreak of norovirus is suspected, specimens should be sent to the Michigan Department of Health & Human Services (MDHHS) for testing. Contact the MDHHS Bureau of Epidemiology at 517-335-8165 to obtain testing approval and necessary instructions prior to sending samples.

Billing Information

Fee Codes


CPT Code

87798 x2

LOINC

54905-5, 54906-3

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