Lab

Parasite Examination of the Stool

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Parasite Examination of the Stool, Ova and Parasite, Stool for Parasite, Stool for Ova, Stool Parasite, Stool Ova

  • Definition
  1. Stool evaluation for intestinal protozoa and eggs
  • Indications
  1. Travel to developing countries
  2. Watery Diarrhea lasting >7 days
  • Procedure
  1. Obtain 3 Stool specimens, each >24 hours apart
  2. Submit each sample in preservative
  3. Recheck positive tests 2-3 weeks after treatment
  • Interpretation
  • Commonly identified protozoa
  1. Ascaris
  2. Strongyloides
  3. Giardia lamblia
    1. Consider Giardia antigen testing instead
  4. Cryptosporidium
    1. Consider Cryptospordium antigen testing instead