Rotavirus antigen test
Definition
The rotavirus antigen test is a test for the presence of rotavirus in the feces. Rotavirus is the most common cause of infectious diarrhea in children. Children 3 months to 2 years old have the most severe symptoms.
How the Test is Performed
There are many ways to collect stool samples. You can catch the stool on plastic wrap that is loosely placed over the toilet bowl and held in place by the toilet seat. Put the sample in a clean container. One type of test kit supplies a special toilet tissue used to collect the sample, which is then placed in a clean container.
For infants and young children wearing diapers, try lining the diaper with plastic wrap. If the plastic wrap is positioned properly, mixing of urine and stool can be minimized for a better sample.
The sample should be collected during the acute phase of the infection, which is the period of ongoing diarrhea.
The sample is then taken to the laboratory for evaluation.
How to Prepare for the Test
No special preparation is necessary for this test.
How the Test Will Feel
The test involves normal defecation.
Why the Test is Performed
This test is performed to diagnose a rotavirus infection.
Normal Results
Normally, rotavirus is not found in the stool.
What Abnormal Results Mean
Rotavirus in the stool indicates a rotavirus infection is present.
Risks
There are no risks associated with this test.
Considerations
Because rotavirus is easily transmitted from person to person, thoroughly wash your hands after contact with a child who is infected or thought to be infected. Any surface that has been in contact with stool should be disinfected.
Infants and children should be monitored for signs of dehydration.
Review Date:
7/1/2007
Reviewed By:
Mark Levin, MD, Division of Infectious Disease, MacNeal Hospital, Berwyn,IL. Review provided by VeriMed Healthcare Network.
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