LABORATORY DIAGNOSIS

• What form of stool specimens is more likely to contain amebic trophozoites?

  =  Formed
• What is essential for accurately identifying amebas?

  = Ocular micrometer
• True or False: Key nuclear characteristics are not important for differentiating amebas.

  = False
• What additional structures and characteristics aid in the identification of amebas?

  = Cytoplasmic inclusions and motility
• What microscopic procedures are used to examine specimens for amebas?

  = Saline wet preparations

  = Iodine wet preparations

  =  Permanent stains
• What is the advantage of saline wet preparations?

  = They show motility of amebic trophozoites.
• What is the purpose of iodine wet preparations?

  = To better visualize internal structures
• Which procedure is necessary to confirm parasite identification?

  =  Permanent smear procedures with stains
• True or False: Measurements of amebic parasites in permanent smears are typically larger than those in wet preparations.

  = False
• Alternative laboratory diagnosis techniques are available for which specific amebas?

  = Entamoeba histolytica

  = Naegleria fowleri

  =  Acanthamoeba spp.