Stool ova and parasites exam is a lab test to look for parasites or eggs (ova) in a stool sample. The parasites are associated with intestinal infections.
How the Test is Performed
A stool sample is needed.
There are many ways to collect the sample.
- You can catch the stool on plastic wrap that is loosely placed over the toilet bowl and held in place by the toilet seat. Then you put the sample in a clean container.
- A test kit is available that supplies a special toilet tissue that you use to collect the sample. After collecting the sample, you put it in a container.
Do not mix urine, water, or toilet tissue with the sample.
For children wearing diapers:
- Line the diaper with plastic wrap.
- Position the plastic wrap so that it will prevent urine and stool from mixing. This will provide a better sample.
Return the sample to your health care provider's office or laboratory as directed. At the lab, a small smear of stool is placed on a microscope slide and examined.
How the Test will Feel
The laboratory test does not involve you. There is no discomfort.
Why the Test is Performed
Your health care provider may order this test if you have signs of parasites, diarrhea that does not go away, or other intestinal symptoms.
There are no parasites or eggs in the stool sample.
Talk to your health care provider about the meaning of your specific test results.
There are no risks.
Parasites and stool ova exam
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Semrad CE. Approach to the patient with diarrhea and malabsorption. In: Goldman L, Schafer AI, eds.Goldman's Cecil Medicine
Giannella RA. Infectious enteritis and proctocolitis and bacterial food poisoning. In: Feldman M, Friedman LS, Brandt LJ, eds.Sleisenger & Fordtran's Gastrointestinal and Liver Disease
Croft AC, Woods GL. Specimen collection and handling for diagnosis of infectious diseases. In: McPherson RA, Pincus MR, eds.Henry's Clinical Diagnosis and Management by Laboratory Methods
Salwen MJ, Siddiqi HA, Gress FG, Bowne WB. Laboratory diagnosis of gastrointestinal and pancreatic disorders. In: McPherson RA, Pincus MR, eds.Henry's Clinical Diagnosis and Management by Laboratory Methods
Fritsche TR, Selvarangan R. Medical parasitology. In: McPherson RA, Pincus MR, eds.Henry's Clinical Diagnosis and Management by Laboratory Methods
Update Date 5/15/2014
Updated by: Jenifer K. Lehrer, MD, Department of Gastroenterology, Frankford-Torresdale Hospital, Aria Health System, Philadelphia, PA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.