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Revista do Instituto de Medicina Tropical de São Paulo

On-line version ISSN 1678-9946


METHANITIKORN, Rungkanta; SUKONTASON, Kom; SUKONTASON, Kabkaew L.  and  PIANGJAI, Somsak. Evaluation of the formalin-Tween concentration technique for parasitic detection. Rev. Inst. Med. trop. S. Paulo [online]. 2003, vol.45, n.5, pp.289-291. ISSN 1678-9946.

The formalin-Tween sedimentation method was compared with the formalin-ether sedimentation for parasitic detection. Of a total 297 fecal specimens examined, 72.1% were positive. The formalin-tween technique was effective for ascertaining helminths, particularly Ascaris lumbricoides, Trichuris trichiura and hookworm eggs; however it has less capability for protozoa detection. This method is simple, inexpensive, less time consuming and highly sensitive when detecting the parasitic infection, particularly when focusing on helminth eggs.

Keywords : Formalin-tween; Concentration; Detection; Parasite.

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