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  • Title: Parasitological stool sample exam by spontaneous sedimentation method using conical tubes: effectiveness, practice, and biosafety.
    Author: Ribeiro SR, Furst C.
    Journal: Rev Soc Bras Med Trop; 2012 Jun; 45(3):399-401. PubMed ID: 22760145.
    Abstract:
    INTRODUCTION: Spontaneous sedimentation is an important procedure for stool examination. A modification of this technique using conical tubes was performed and evaluated. METHODS: Fifty fecal samples were processed in sedimentation glass and in polypropylene conical tubes. Another 50 samples were used for quantitative evaluation of protozoan cysts. RESULTS: Although no significant differences occurred in the frequency of protozoa and helminths detected, significant differences in protozoan cyst counts did occur. CONCLUSIONS: The use of tube predicts a shorter path in the sedimentation of the sample, increases concentration of parasites for microscopy analysis, minimizes the risks of contamination, reduces the odor, and optimizes the workspace.
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