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Ova and Parasites, Stool
Laboratory:
Microbiology
Soft Order Code:
OPE
Synonyms:
Trichrome Stain Feces, Ova and Parasites
Parasite Exam, Stool Parasite Examination, Stool
Rectal, Ova and Parasites Sigmoid, Ova and Parasites
Stool, Ova and Parasites
Container:
Ova and Parasite transport kit
Normal Volume:
5 mL stool
Minimum Volume:
5 mL stool
Offsite Collection:
Collect fresh random stool or sigmoid specimen. If necessary, obtain stool specimen using a warm saline enema or fleets Phospho-Soda. Specimens obtained with mineral oil, bismuth, or magnesium compounds are not acceptable. Wait until patient has cleared substance (about 7-10 Days) before collecting stools for examination. Stool specimens MUST be sent in Ova and Parasite transport kit. Mix stool specimen thoroughly in transport vial fluid. If necessary, place a urine bag on the patient to prevent urine contamination. Specimen should not come in contact with water. Stool specimens may be collected directly from a diaper, except super absorbent types. Continue adding stool to the transport until specimen reaches the fill line. Transport kits may be held up to 1 week refrigerated or at room temperature. RECOMMENDED SCREENING: 2 stool specimens, one every other day. Note on requisition if a Cryptosporidium or Cyclospora cayetanensis exam is needed as a special staining procedure must be performed. Indicate specimen source and collection date/time. Specimens contaminated with urine, water, or interfering substances such as barium, bismuth, Metamucil, caster oil, or mineral oil are unacceptable. If unacceptable specimen is received, the client will be notified before disposal of the original specimen. Only submit 1 specimen per day. See MLabs Stool Specimen Collection Instructions available online at http://mlabs.umich.edu/files/pdfs/GL-Stool_Collection_Guidelines.pdf for patient instructions.
Onsite Collection (UMHS Hospitals Only):
Collect fresh random stool or sigmoid specimen. If necessary, obtain stool specimen using a warm saline enema or fleets Phospho-Soda. Specimens obtained with mineral oil, bismuth, or magnesium compounds are not acceptable. Wait until patient has cleared substance (about 7-10 Days) before collecting stools for examination. Stool specimens MUST be sent in Ova and Parasite transport kit. Mix stool specimen thoroughly in vial fluid. If necessary, place a urine bag on the patient to prevent urine contamination. Specimen should not come in contact with water. Stool specimens may be collected directly from a diaper, except super absorbent types. Continue adding stool to the transport until specimen reaches the fill line. Transport kits may be held up to 1 week refrigerated or at room temperature. RECOMMENDED SCREENING: 2 stool specimens, one every other day. Note on requisition if a Cryptosporidium or Cyclospora cayetanensis exam is needed as a special staining procedure must be performed. If the patient has been hospitalized more than 3 days, this test will not be done unless there is an overriding clinical reason. Indicate specimen source and collection date/time. Specimens contaminated with urine, water, or interfering substances such as barium, bismuth, Metamucil, caster oil, or mineral oil are unacceptable. Only submit 1 specimen per day. Indicate patient history, including foreign travel. If both a routine O&P examination and Giardia antigen testing are requested, only the antigen test will be performed unless the patient was seen by GI or ID or both tests are indicated based on relevant patient history.
Days Set Up:
Monday-Friday
Analytic Time:
Monday-Friday: 48 hours
Reference Range:
*Reference ranges may change over time. Please refer to the original patient report when evaluating results.
No parasites seen
Test Usage:
Establish the diagnosis of parasitic infestation
Contraindications:
Test should not be performed on patients who have received administration of barium, bismuth, Metamucil, castor oil, or mineral oil.
Test Limitations:
The specimen will be examined for parasites only. One negative result does not rule out the possibility of parasitic infection. It is unlikely that trophozoites can be detected in specimens which are not sent in the appropriate transport vial.
Test Methodology:
Microscopic Exam
Additional Information:
Test includes microscopic examination of concentrate and trichrome stained smear. If, upon examination, Cryptosporidia, Microsporidia, Cyclospora, and/or Cystoisospora is suspected, the appropriate confirmatory test(s) will be performed at an additional charge. By ordering this test the clinician acknowledges that additional reflex testing will be performed and billed at a separate additional charge if indicated. PMN, red blood cells and Charcoal-Leyden crystals are reported if present.
LOINC:
10704-5 OPE, 43227-8 TRIFEE
CPT Code:
87177 O&P Exam, 87209 Trichrome Stain
Inpatient Fee Code:
32268 OPE, 32216 TRIFEE
Outpatient Fee Code:
32268 OPE, 32216 TRIFEE
MLabs Fee Code:
32268 OPE, 32216 TRIFEE
Alternate Specimen:
Specimens received in Parasafe fixative are acceptable, but EcoFix (supplied by MLabs) is preferred. [1/08]
Rejection Criteria:
Specimen not in transport or not completely emulsified in transport liquid; less than minimum volume; barium or other interfering substances in the stool; patient in-house >3 days
Storage Temperature:
Ambient: Yes Refrigerated: Yes Frozen: No
Specimen Retention:
10 days
Database ID:
701

For Technical Questions or Comments Directly Dealing With The Handbook E-mail: jsica@umich.edu