A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
OVA AND PARASITE SCREEN
Test CodeLAB258
CPT Codes
87177, 87209
Includes
Direct examination (if indicated), concentrated examination, and trichrome stain for cysts, trophozoites, eggs, larvae, and adult worms in stool or duodenal contents.
Preferred Specimen
ParaPak transport media (available from Microbiology lab). Outpatients stool submissions must be sent to ParaPak transport media.
Minimum Volume
2 mL stool
Instructions
If patient has received barium, wait ten days before submitting a stool specimen. If enemas are required, only fleets or saline enemas are recommended. For best results, collect one specimen every two days for a total of three specimens. See Clinical Significance for a list of acceptable and unacceptable purgatives.
Transport Temperature
Refrigerated
Specimen Stability
Fresh specimen: Refrigerate
Specimen in ParaPak: Ambient
Transport to the laboratory within 14 days.
Specimen in ParaPak: Ambient
Transport to the laboratory within 14 days.
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Stools containing barium,contamination of outer surface of container, and specimen contaminated with urine or toilet water will be rejected. No more than one specimen per day will be tested. Twenty-four hour specimens, specimens sent in diapers, on toilet paper, or on a tissue will be rejected. Routine testing will not be performed on patients hospitalized for greater than 3 days. Outpatient specimen submissions will be rejected if not received in transportmedia.
Methodology
Stain/Wet Mount
Setup Schedule
Monday-Friday
Reference Range
No ova or parasites seen.
Clinical Significance
Agent | Acceptable | Unacceptable | Waiting Period |
Fleets | X | ||
Barium | X | 5-10 days | |
Saline | X | ||
Metamucil | X | 48 hours | |
Ducolax | X | 48 hours | |
Mylanta | X | 48 hours | |
Milk of Magnesia | X | 48 hours | |
Alterna-Gel | X | 48 hours | |
Gelusil | X | 48 hours | |
Riopan | X | ||
Duclcolax | X | ||
Donnagel | X | 48 hours | |
Lomotil | X | ||
Imodium | X | ||
Iridum | X | ||
Kaopectate | X | 48 hours | |
Mineral Oil | X | 5-10 days | |
Stool Softeners | X |
Performing Laboratory
West Virginia University Hospital, Inc.
Camden Clark Medical Center