Giardia/Cryptosporidium EIA

Test ID: 


CPT code:

87329, 87328


Cryptosporidium Antigen

Clinical Use:

Rapid detection of Giardia and Cryptosporidium from clinical samples.

Specimen Type:


Requested Volume: 

2 Grams (thumbnail size portion of stool) or 2 mL liquid stool

Minimum Volume: 

2 Grams or 2 mL (minimum)

Container Type: 

O&P transport vial with formalin (Para-Pak® pink); stool C&S transport vial with Cary Blair medium (Para-Pak® orange); sterile screw cap container or Para-Pak® white


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.

Storage Instructions:

Maintain stool specimens in O&P transport with formalin at room temperature or refrigerate and test within two months of collection. Stool collected in Cary Blair medium should be refrigerated or frozen and tested within one week of collection. Stool in sterile container should be frozen or can be kept refrigerated if tested within 48 hours.

Rejection Criteria

Inappropriate specimen transport device; specimens in PVA; specimens other than stool; specimens received other than described; inadequate labeling

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MCI Diagnostic

Providing top patient care with fast results. 

7018 South Utica Avenue

Tulsa, Oklahoma 74136

Hours of Operation

Mon – Sat: 7AM-11PM

Sun: 7AM-3PM

Government Contract

Mon – Sat: 7AM-11PM

Sun: 7AM-3PM


Mon – Sat: 7AM-11PM

Sun: 7AM-3PM

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