Ova and Parasites: Giardia and Cryptosporidium, Routine OAPDFA
|Method(s)||Light Microscopy/Direct Fluorescent Antibody|
|Transport||Inpatient: Stool collected in a dry, clean container and delivered immediately at room temperature. Outpatient: Several spoonfuls of stool transferred to a vial with SAF Fixative and delivered within 72 hours at room temperature.|
|Remarks||Three specimens collected on separate days should be submitted per standard recommendations as parasites may be shed intermittently. Further, only 1 specimen per day will be reimbursed by Medicaid and private insurers, so only 1 specimen per day will be accepted for testing.|
|Stability||Stool preserved in SAF: 1 month at Room Temperature. If specimen is unpreserved: liquid stool is stable for up to one hour at Room Temperature. Semisolid stool is stable for up to 2 hours at Room Temperature. Formed stool is stable for 24 hours at 4°C.|
|Unacceptable Conditions||Specimen collected on swab, stick or diaper. Specimens contaminated with oil, barium or urine. Dry specimens are inappropriate for testing.|
|Notes||Giardia and Cryptosporidium are looked for routinely as they are the most prevalent intestinal parasites seen locally and in the U.S. as a whole.|
|Preferred Specimen Collection Device(s)|
Negative for Giardia by DFA.
Negative for Cryptosporidium by DFA.