Faecal examination: Comparative efficiency of simple sedimentation and other concentration techniques.

In order to determine their practical efficiencies, various techniques were used in the examination of each of 151 faecal specimens. These techniques are normal saline faecal smear, simple sedimentation technique in diagnostic quantity yield of parasites present in the faecal specimen has no significant difference from normal saline faecal smear. Because of its simplicity in operation and high efficiency of yield for parasites in a faecal specimen, the simple sedimentation is recommended for ordinary clinical laboratory tests and in epidemiological surveys.