TEST CATALOG ORDERING & RESULTS SPECIMEN HANDLING CUSTOMER SERVICE EDUCATION & INSIGHTS
Test Catalog

Test ID: OAP    
Ova and Parasite, Concentrate and Permanent Smear, Microscopy, Feces

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

Specimen Type Describes the specimen type validated for testing

Fecal

Advisory Information

See OAPNS / Ova and Parasite, Microscopy, Varies for the submission of non-stool sources for ova and parasitic examination.

 

If specific organisms or disease states are suspected, see below:

If Acanthamoeba is suspected, order ACARP / Acanthamoeba species Molecular Detection, PCR, Ocular.

If Cryptosporidium is suspected, order CRYPS / Cryptosporidium Antigen, Feces.

If Cyclospora is suspected, order CYCL / Cyclospora Stain.

If free-living amebae are suspected, order FLARP / Free-Living Amebae Molecular Detection, PCR, Spinal Fluid, Fresh and Paraffin Tissue.

If Giardia is suspected, order GIAR / Giardia Antigen, Feces.

If microsporidia are suspected, order LCMSP / Microsporidia species, Molecular Detection, PCR.

If pinworm is suspected, order PINW / Pinworm Exam, Perianal.

If scabies is suspected, order PARID / Parasite Identification.

If Schistosoma is suspected, order SHUR / Schistosoma Exam, Urine.

If Trichomonas vaginalis is suspected, order TVRNA / Trichomonas vaginalis by Nucleic Acid Amplification.

If worms or worm segments are submitted, order PARID / Parasite Identification.

Additional Testing Requirements

It is strongly recommended that multiple stool specimens be submitted for ova and parasite analysis. At least 3 specimens should be collected, 1 each day or on alternate days (over a maximum 10-day period).

Parasites are shed irregularly in stool and examination of a single specimen does not guarantee detection.

Specimen Required Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Patient Preparation: Specimen collection should be delayed for 7 to 10 days after administration of barium, bismuth, kaolin, magnesia, castor oil or mineral oil, and 2 to 3 weeks after antibiotics have been given since these may interfere with identification of protozoa.

Specimen Type: Stool, duodenal aspirate, colonic washing

Supplies: ECOFIX Stool Transport Vial (Kit) (T219)

Preferred: ECOFIX preservative (T219)

Acceptable: 10% Buffered Formalin Stool Transport plus Polyvinyl Acetate (PVA) Stool Transport

Specimen Volume: Portion of stool; or entire collection of intestinal specimen

Collection Instructions:

1. Place specimen into preservative within 30 minutes of passage or collection.

2. Follow instructions on the container as follows:

a. Mix the contents of the tube with the spoon, twist the cap tightly closed, and shake vigorously until the contents are well mixed. Refer to the fill line on the Ecofix vial for stool specimens.

b. Do not fill above the line indicated on the container.

c. Duodenal aspirates, small bowel aspirates, or colonic washings should be placed in Ecofix in a ratio of 1:1

Additional Information: Stool placed in 10% buffered formalin can be accepted if accompanied by a PVA-preserved specimen; 10% buffered formalin-preserved specimens submitted without an accompanying PVA-preserved specimen will be canceled.

Special Instructions Library of PDFs including pertinent information and forms related to the test

Forms

If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:

-General Request (T239)

-Microbiology Test Request (T244)

-Gastroenterology and Hepatology Client Test Request (T728)

Specimen Minimum Volume Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

5 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected

All specimens will be evaluated by Mayo Clinic Laboratories for test suitability.

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen TypeTemperatureTimeSpecial Container
FecalAmbient (preferred)21 days
 Refrigerated 21 days