Test Details
Methodology
Real-time reverse transcriptase polymerase chain reaction (RT-PCR)
Result 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.
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.
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
Stability Requirements
| Temperature | Period |
|---|---|
| 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 |
Storage Instructions
Refrigerate. Samples in Cary-Blair medium (Para-Pak® Orange) can be kept at room temperature.
Causes for Rejection
Quantity not sufficient for analysis; specimen too old; leaking or broken tube; frozen sample in Cary-Blair medium (Para-Pak® Orange)
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 138307 | Norovirus, RT-PCR | 88701-8 | 139356 | Norovirus GI | 54905-5 | |
| 138307 | Norovirus, RT-PCR | 88701-8 | 139357 | Norovirus GII | 54906-3 | |
| Order Code | 138307 | |||||
| Order Code Name | Norovirus, RT-PCR | |||||
| Order Loinc | 88701-8 | |||||
| Result Code | 139356 | |||||
| Result Code Name | Norovirus GI | |||||
| UofM | ||||||
| Result LOINC | 54905-5 | |||||
| Order Code | 138307 | |||||
| Order Code Name | Norovirus, RT-PCR | |||||
| Order Loinc | 88701-8 | |||||
| Result Code | 139357 | |||||
| Result Code Name | Norovirus GII | |||||
| UofM | ||||||
| Result LOINC | 54906-3 |