Ova and Parasite Exam

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Ova and parasite (O&P) exam is a microscopic evaluation of a stool sample that is used to look for parasites that may infect the lower digestive tract, causing symptoms such as diarrhea. The parasites and their eggs (ova) are shed from the lower digestive tract into the stool.

If there are no ova or parasites seen, then a person’s diarrhea may be due to another cause. There may also be too few parasites to detect in the sample tested.

If a parasite is identified, then the person does have a parasitic infection. Typically, a person will only have one type of parasite that is causing their symptoms, but there could be more than one.

Keywords: O&P; Parasitic Examination; stool.

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