Giardia lamblia by EIA and Ova and Parasites
87329, 87177, 87209
Stool for Ova and Parasites Including EIA for Giardia
Rapid detection of Giardia lamblia; establish the diagnosis of parasitic infection
2 g (thumbnail size portion of stool)
O & P transport/preservative kit with formalin and PVA (Para-Pak® pink and gray)
Patient should be given three collection kits and be instructed to collect three separate specimens 48 hours apart during a period of five to six days. Fecal specimens for parasitic examination should be collected before initiation of antidiarrheal therapy or antiparasitic therapy. The highest yield on hospitalized patients occurs when diarrhea is present on admission or within 72 hours of admission. The onset of diarrhea more than 72 hours after admission is usually caused by Clostridium difficile toxin rather than parasites or the usual stool pathogens. The following recommendations are made for efficient and cost-effective diagnosis of diarrheal disease in patients admitted with gastroenteritis.
• Submit one or two specimens per diarrheal illness immediately. Consider requesting the EIA for Giardia (see Giardia lamblia, EIA and Ova and Parasites Examination  and Giardia lamblia, Direct Detection EIA ) if that is the primary suspected organism.
• If those are negative, submit an additional specimen after five days.
• Patients who are immunocompromised by AIDS, malignancy, or immunosuppressive therapy may require additional testing for unusual stool pathogens (eg, Cyclospora Smear, Stool ).
Maintain specimen at room temperature.
Specimen not submitted in formalin and PVA kit; specimens other than stool; unlabeled specimen or name discrepancy between specimen and test request label; specimen received in expired transport
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