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Also known as: Ova and Parasite Exam
Formal name: Parasitic Examination, Stool
Related tests: Stool Culture, Giardia, Cryptosporidium, and Entamoeba histolytica antigen tests

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NOTE: This article is based on research that utilizes the sources cited here as well as the collective experience of the Lab Tests Online Editorial Review Board. This article is periodically reviewed by the Editorial Board and may be updated as a result of the review. Any new sources cited will be added to the list and distinguished from the original sources used.

Sources Used in Current Review

Vorvick, L. (Updated 2010 May 4). Stool ova and parasites exam. MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/003756.htm. Accessed February 2011.

(Modified 2010 June 2). Parasites and Foodborne Illness. USDA Food Safety and Inspection Service Fact Sheets [On-line information]. Available online at http://www.fsis.usda.gov/factsheets/Parasites_and_Foodborne_Illness/index.asp through http://www.fsis.usda.gov/factsheets. Accessed February 2011.

Pennardt, A. (Updated April 28). Giardiasis in Emergency Medicine. eMedicine [On-line information]. Available online at http://emedicine.medscape.com/article/782818-overview through http://emedicine.medscape.com. Accessed February 2011.

(Modified 2009 July 20). Detection of Parasite Antigens. DPDx Diagnostic Procedures Stool Specimens, [On-line information]. Available online at http://www.dpd.cdc.gov/dpdx/HTML/DiagnosticProcedures.htm through http://www.dpd.cdc.gov. Accessed February 2011.

Fisher, M. et. al. (Updated 2010 November). Diarrhea, Parasitic Evaluation. ARUP Consult [On-line information]. Available online at http://www.arupconsult.com/Topics/ParasiticDiarrhea.html?client_ID=LTD through http://www.arupconsult.com. Accessed February 2011.

Mayo Clinic Staff (2010 May 29). Giardia infection (giardiasis). Mayo Clinic [On-line information]. Available online at http://www.mayoclinic.com/health/giardia-infection/DS00739 through http://www.mayoclinic.com. Accessed May 2011.

(© 2005-2010). Viruses, Bacteria and Parasites in the Digestive Tract. Children's Hospital Boston [On-line information]. Available online at http://www.childrenshospital.org/az/Site1959/mainpageS1959P0.html through http://www.childrenshospital.org. Accessed May 2011.

Mukherjee S . (Updated November 18, 2009). Giardiasis. eMedicine [On-line information]. Available online at http://emedicine.medscape.com/article/176718-overview through http://emedicine.medscape.com. Accessed May 2011

Kucik C, et al (March 1 2004). Common Intestinal Parasites. Am Fam Physician. 2004 Mar 1;69(5):1161-1169. Available online at http://www.aafp.org/afp/2004/0301/p1161.html through http://www.aafp.org. Accessed May 2011.

Pagana, K. D. & Pagana, T. J. (© 2011). Mosby's Diagnostic and Laboratory Test Reference 10th Edition: Mosby, Inc., Saint Louis, MO. Pp 911-912.

Forbes, B. et. al. (© 2007). Bailey & Scott's Diagnostic Microbiology, 12th Edition: Mosby Elsevier Press, St. Louis, MO. Pp 543-627.

Sources Used in Previous Reviews

Thomas, Clayton L., Editor (1997). Taber's Cyclopedic Medical Dictionary. F.A. Davis Company, Philadelphia, PA [18th Edition].

Pagana, Kathleen D. & Pagana, Timothy J. (2001). Mosby's Diagnostic and Laboratory Test Reference 5th Edition: Mosby, Inc., Saint Louis, MO.

Hardy, D. (2002 January). Diarrhea Caused by Parasites. Clinical Laboratories Newsletter, Univ of Roch Med Center, Vol. 22, No. 1 [On-line newsletter]. Available online at http://www.urmc.rochester.edu/path/newsletter102.htm through http://www.urmc.rochester.edu.

Diagnostic Procedures for Stool Specimens. DPDx, Laboratory Identification of Parasites of Public Health Concern [On-line information]. Available online through http://www.dpd.cdc.gov.

Kotton, C., Updated (2002 January 08, Updated). Stool Ova And Parasites Exam. MEDLINEplus Health Information, Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/003756.htm.

A.D.A.M. editorial, Updated (2001 September 14). Giardiasis. MEDLINEplus Health Information, Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/000288.htm.

Kott, C., Updated (2002 July 19, Updated). Cryptosporidium enteritis. MEDLINEplus Health Information, Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/000617.htm.

(2001 March). Amebiasis. CDC, Division of Parasitic Diseases, Parasitic Disease Information, Fact Sheet [On-line information]. Available online at http://www.cdc.gov/ncidod/dpd/parasites/amebiasis/factsht_amebiasis.htm through http://www.cdc.gov.

(2001 May). Cryptosporidiosis. CDC, Division of Parasitic Diseases, Parasitic Disease Information, Fact Sheet [On-line information]. Available online at http://www.cdc.gov/ncidod/dpd/parasites/cryptosporidiosis/factsht_cryptosporidiosis.htm through http://www.cdc.gov.

(2001 May). Giardiasis. CDC, Division of Parasitic Diseases, Parasitic Disease Information, Fact Sheet [On-line information]. Available online at http://www.cdc.gov/ncidod/dpd/parasites/giardiasis/factsht_giardia.htm through http://www.cdc.gov.

(2003 February, Updated ). Giardiasis. AAFP, familydoctor.org Fact Sheet [On-line information]. Available online at http://familydoctor.org/handouts/078.html through http://familydoctor.org.

Giardia Antigen by EIA. ARUP's Guide to Clinical Laboratory Testing (CLT) [On-line information]. Available online at http://www.aruplab.com/guides/clt/tests/clt_a247.htm#1149440 through http://www.aruplab.com.

Cryptosporidium Stain and Antigen. ARUP's Guide to Clinical Laboratory Testing (CLT) [On-line information]. Available online at http://www.aruplab.com/guides/clt/tests/clt_a174.htm#1060170 through http://www.aruplab.com.

Giardia lamblia. Ohio State University, College of Biological Sciences, Parasites and Parasitological Resources [On-line information]. Available online at http://www.biosci.ohio-state.edu/~parasite/giardia.html through http://www.biosci.ohio-state.edu.

Cryptosporidium parvum. Ohio State University, College of Biological Sciences, Parasites and Parasitological Resources [On-line information]. Available online at http://www.biosci.ohio-state.edu/~parasite/cryptosporidium.html through http://www.biosci.ohio-state.edu.

Pagana, Kathleen D. & Pagana, Timothy J. (© 2007). Mosby's Diagnostic and Laboratory Test Reference 8th Edition: Mosby, Inc., Saint Louis, MO. Pp 887-888.

Wu, A. (2006). Tietz Clinical Guide to Laboratory Tests, Fourth Edition. Saunders Elsevier, St. Louis, Missouri. Pp 1590.

(2007 June 25, Reviewed). Risks from Food and Water (Drinking and Recreational). Travelers' Health: Yellow Book, CDC Health Information for International Travel 2008, Chapter 2, Pre- and Post-travel General Health Recommendations [On-line information]. Accessed on: 12/9/07. Available online at http://wwwn.cdc.gov/travel/yellowBookCh2-FoodWaterRisks.aspx through http://wwwn.cdc.gov.

(2007 February 27, Reviewed). About Parasites. CDC Parasitic Diseases [On-line information]. Available online at http://www.cdc.gov/ncidod/dpd/aboutparasites.htm through http://www.cdc.gov. Accessed on 12/24/07.

Forbes BA, Sahm DF, Weissfeld AS. Bailey & Scott's Diagnostic Microbiology. 12th Edition: Mosby Elsevier, St. Louis, MO; 2007.