Ova and Parasite Screen (Giardia/Cryptosporidium Antigen)
Specimens will be held in the laboratory for 7 days. During this time, a complete ova and parasites examination can be requested by calling Laboratory Customer Service 314-454-4161. The complete ova and parasites exam may be useful when there is persistent diarrhea, with a negative test for Giardia and Cryptosporidium, especially when the patient has recently traveled or resided outside the United States.
	Test Performed At:
		St. Louis Children’s Hospital
	Specimen Required:
	SUBMIT ONLY 1 OF THE FOLLOWING SPECIMENS:
		Formalin and PVA-Preserved Stool
		Place enough stool in the PVA and formalin containers to bring the liquid level up to the “Fill-to-here” line. PVA and formalin preservative containers are supplied by St. Louis Children’s Hospital. Send preserved specimen containers at ambient temperature only.
		NOTE:	Specimen must be collected prior to or at least 1 week after any barium studies.
	OR if “in-patient” submit:
		Fresh Stool if received in the laboratory within 1 hour of collection
		1.0 g of stool in a screw-capped, sterile container. Maintain sterility and forward promptly.
		NOTE.	Specimen must be collected prior to or at least 1 week following barium studies.
		Unacceptable specimens:		Specimens submitted on swabs Specimens submitted in diapers
	Laboratory Notes:
		None
	Reference Values:
		No Giardia/Cryptosporidium antigen detected
		Giardia antigen detected Cryptospordium antigen detected
	Day(s) Test Set Up:
		Monday - Friday
	Cut-Off Time:
	Turn Around Time:
		1-3 days
	CPT Code:
		87328
	KIDDOS Order Name:
		O&P Screen (Giardia/Crypto)
	Cerner Order Name:
		P OPS

Last updated 05/09