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Quiz 02

Presentation of Quiz #2

The Microbiology section has just decided to incorporate immunoassays for Giardia lamblia and Cryptosporidium parvum into the laboratory test menu. The laboratory is also considering the addition of tests for the Entamoeba histolytica/Entamoeba dispar group and the true pathogen, Entamoeba histolytica. What factors should be considered prior to implementation of these immunoassays? Please comment on the issues presented below.

It is important to remember that the immunoassay tests currently available are not designed to “take the place” of the Ova and Parasite examination (O&P) (direct wet smear [fresh specimen only], concentration, and permanent stained smear). Both the O&P examination and the immunoassays for intestinal protozoa should be separate orderable, billable tests.

Test kit options and specimen collection requirements

Test ordering menu

Test coding

Test report formats

Client education

Personnel expertise

Geographic area

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Each Quiz has a two section format: the first section will present the Quiz topic and the second section will provide a discussion of the answer and/or various options in response to the Quiz situation presented to the user. In some situations, there may be more than one correct response.

The content within this site is made possible through the extensive contribution of Lynne S. Garcia, M.S., MT(ASCP), CLS(NCA), BLM(AAB), F(AAM), Director, Consultantation and Training Services (Diagnostic Medical Parasitology and Health Care Administration). For additional information, she can be contacted at

Reference: Garcia, L.S. 2015. Diagnostic Medical Parasitology, 6th Ed., ASM Press, Washington, D.C.