Test Directory

Test Code
ROTAV
Test Name
Rotavirus Antigen, Stool
CPT Codes
87425
Expected Turnaround Time
1 - 4 days
Clinical Utility

Detect rotavirus in stools of patients suspected of having viral gastroenteritis. Rotavirus is an extremely common cause of pediatric gastroenteritis. The illness is most common in winter, is highly contagious, involves five to eight days of diarrhea, and is rarely fatal. 

Specimen and Container Info

Specimen Type: Liquid Stool

Alternate Specimen Type: Semiformed stool

Collection Container: Sterile Container

Alternate Collection Container: Unpreserved Transport Vial

Desired Specimen Volume: 2 mL liquid stool

Alternate Specimen Volume: 1 g semiformed stool

Collection Instructions
  1. Collect random stool in sterile container or unpreserved transport vial.
  2. Collect as soon as possible after onset of disease, preferably three to five days after onset. 
Processing and Submission Instructions
  1. Transport in the original unpreserved collection container.
  2. Refrigerate immediately. Do not share sample with other departments.
Transport Instructions

Transport to the laboratory refrigerated. 

Stability Requirements

Refrigerated

3 days

Frozen

>3 days

Causes for Rejection
  • Specimen received in grossly leaking transport container
  • Dry specimen
  • Specimen submitted in fixative or additive
  • Bacterial swab specimen
  • Diapers
  • Specimen transported at room temperature
  • Specimen received after prolonged delay (usually more than 72 hours)
  • Specimen in transport media or preservative
Methodology
Immunoassay
Reference Intervals

See patient report.

Limitations

Quality of specimens cannot be evaluated and specimens are collected randomly. Patients should also be evaluated for possible bacterial gastroenteritis.

Alternate Names
  • Rotavirus, Direct Detection Immunoassay
Reference Lab
Labcorp Of America Holdings
Testing Schedule
Routine, 5 times per week