Microscropic examination of feces is a standard laboratory method for diagnosing gastrointestinal parasite infections. In North America, the ova and parasite (O&P) examination is typically performed using stool that is chemically fixed in polyvinyl alcohol (PVA) and formalin, after which the stool is concentrated by filtration to enhance sensitivity.

To evaluate the efficacy of Mini Parasep® SF commercial faecal parasite concentrator for the laboratory diagnosis of intestinal parasitism. This was compared with the modified Ridley-Allen sedimentation technique.

Many techniques have been devised to detect helminth ova and/or protozoan cysts. These may be classified ac­cording to features of manipulation and physical attributes as follows: direct smear (wet saline mounts,with or without stains, and permanently stained mounts); sedimentation, fol­lowed by direct smear; flotation procedures, with or without centri­fugation; and ether sedimentation with...