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Detection of Intestinal Parasites



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Concentrated Fecal Smear Stained with a Modified Trichrome Stain

Slide 11

March 2009

This next image shows several glass slides containing permanently stained concentrated feces. You’ll notice that there is a drop of oil on each slide because these smears will be examined under high magnification, using 50 and 100x objectives. The permanent stain gives us more detail than the wet mount alone and allows for better detection of the parasites Dientamoeba fragilis and Blastocystis hominis. It is not clear whether or not these organisms cause disease in humans, but there is some evidence that links them with non-specific GI symptoms.

Concentrated Fecal Smear

 


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