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| 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 Parasites, Stool
Test CodeOAP
Includes
Ova and Parasite Concentrate Result
Preferred Specimen
Fresh stool preserved in formalin and PVA
Patient Preparation
Interfering substances: Bismuth, barium (wait 7-10 days), antimicrobial agents (wait 2 weeks), gallbladder dye (wait 3 weeks after procedure)
Minimum Volume
Stool: Add stool to bring the liquid level to the "fill to here" line on the vial
Other Acceptable Specimens
Raw stool specimen <2 hours old.
Instructions
Place fresh stool in 10% formalin transport vial, as well as a PVA transport medium, within 1 hour of collection. Add stool to bring the liquid level to the "fill to here" line on the vial. Mix well. Send both specimens at room temperature in the same shipping container.
Transport Container
10% formalin and polyvinyl alcohol (PVA) transport vial
Transport Temperature
Ambient
Specimen Stability
Preserved stool: 72 hours
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Unpreserved stool > 2 hours old; Specimens containing barium; Stool preserved in medium other than 10% formalin & PVA, ;Specimen received frozen; Stool submitted in expired transport
Methodology
Microscopic Examination of Concentrate • Permanent Stained Smear
Setup Schedule
Monday-Friday
Report Available
2-4 days
Reference Range
No ova and parasites seen
Clinical Significance
Diseases caused by human parasites remain on a worldwide basis among the principle causes of morbidity and mortality. Correct diagnosis of intestinal parasitic infection depends on proper collection, transport, detection and identification of parasites in stool specimens. Symptoms range from malaise to death. Treatment is dependent upon examining multiple stool specimens due to the erratic shed rates of some parasites.
