Detection of Intestinal Parasites
Giardia intestinalis

March 2009
Here is what a concentrated fecal preparation looks like when it has been permanently stained. You’ll notice that the food material, bacteria, and parasites are still present and have taken on a mixture of green-ish blue and redish-purple hues. Again, it takes a lot of expertise to interpret this type of preparation, but an experienced eye will pick out the Giardia cysts in the bottom right-hand corner of this slide.
Giardia intestinalis |
Jump to section:
- Introduction
- Intestinal Parasites
- Detection of Intestinal Parasites
- Direct Smear of Fresh Feces
- Direct Smear of Fresh Feces
- Motile Trophozoite of Pentatrichomonas hominis
- Motile Larva of Strongyloides stercoralis
- Feces Concentration
- Concentrated Feces with Saline
- Concentrated Feces Wet Preparation
- Concentrated Fecal Smear Stained with a Modified Trichrome Stain
- Giardia intestinalis
- Additional Tests on Fecal Samples
- Which One to Order?
- Parasitic Investiagation of Stool Specimens Algorithm
- Giardia intestinalis
- Life Cycle of Giardia
- Concentrated Feces Wet Preparation
- Giardia intestinalis - Cyst
- Giardia intestinalis - Trophozoite
- Clinical Presentation
- Epidemiology
- US Risk Factors for Giardiasis
- G intestinalis is Easily Transmitted Because
- Diagnosis of Giardiasis
- Algorithm Close-up
- Giardia Antigen Test, Feces
- Sandwich Assay
- ELISA Microtiter Plate
- Treatment
- Cryptosporidium spp
- Cryptosporidium Life Cycle
- Cryptosporidium - Cyst on Wet Prep
- Cryptosporidium - Cysts with Acid Fast Stain
- Clinical Presentation
- Epidemiology
- Examples of Outbreaks
- Examples of Outbreaks
- Cryptosporidium is Easily Acquired Because
- Diagnosis
- Algorithm Close-up
- Cryptosporidium Antigen Test, Feces
- Treatment
- Less Common Fecal Parasites
- Algorithm Close-up
- References
- Questions?