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  Specimen Collection
 
 

Direct Smear

Topic Comments
Principle To assess worm burden of patient, to provide quick diagnosis of heavily infected specimen, to check organism motility and to diagnose organisms that might not seen from concentration or permanent stain methods.
Specimen Any fresh stool specimen that has not been refrigerated.
Reagents 0.85% NaCl; Lugol's or D'Antoni's iodine. Nair's methylene blue can be used for trophozoites (not commonly used).
 
  Specimen Processing
  Diagnostic Methods
  Stool Testing Options
  Organism Identification
  Reporting
  Proficiency Testing