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Detection of Intestinal Parasites



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Direct Smear of Fresh Feces

Slide 4

March 2009

Let’s first discuss the traditional ova and parasite examination, since this is the classic test that many of you may be familiar with.

Each of the 3 components I mentioned previously has a specific use. The direct smear of fresh feces is performed whenever fresh, unfixed feces is received in the laboratory and it involves an examination of the unconcentrated fecal sample. Since there are no fixatives at this stage, the parasites may still be alive and motility of trophozoites and worm larvae may be detected.

Direct Smear of Fresh Feces

 



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