Ova and Parasites

Test Name

Ova and Parasites
Alternate Name(s)

O&P

Enteric Helminths (Nematodes, Trematodes, Cestodes, Acanthocephalans) and Balantioides Microscopy
Laboratory Module

Microbiology
Ordering Mnemonic OP
Specimen Type

Stool
Collection Container

SAF transport media
Container Information

SAF media
Collection Information
  • The suspected organism may be included under the ‘Test Description’.
  • Please note on the requisition (under other): If the patient has Eosinophilia, HIV, is immunocompromised, has a critical illness or was admitted to ICU, or had a previous parasitic infection.
  • Indicate Country/Region and if the patient is a new immigrant or refugee or returned traveler under ‘Travel’ section of the requisition. It is imperative that the foreign country be identified.
  • Collect a sample in each white top and yellow top (SAF) vial of the Parasitology Kit. Follow the collection instructions on the instruction sheet provided with the Parasitology Kit.
  • Collect one specimen per day for 3 days in each vial for a total of six (6) specimens. 
  • Avoid the use of mineral oil, bismuth, Milk of Magnesia, antacids, compounds containing Kaolin or barium prior to collection. Avoid contamination with urine or water.
  • Have patient pass stool onto a clean, dry bedpan. Transfer a portion of stool containing mucous, blood or pus to the SAF transport media. Do NOT use toilet paper to transfer stool.
  • Select areas of stool that appear blood-stained, purulent or watery. Transfer this to parasite transport media (labeled SAF FIXATIVE). Thoroughly mix 5 mL of stool with the 20 mL of fixative (1:4 ratio).
Test Schedule

Daily
Routine Turnaround Time 7 - 10 days
Critical Values

As any ova or parasites are detected and identified the information is made available to the health care provider.
Lab Process Notes

Only one specimen per patient per collection date will be tested by referral laboratory. 
Storage and Transport

Specimen should be transported to laboratory after collection in biohazardous bag.

SAF Specimens should be stored and transported at room temperature or alternatively 2-8°C after receipt in the laboratory.
Test Referred To

Offsite, Referral Laboratory

Contact Us

The Brantford General

200 Terrace Hill Street
Brantford, ON
N3R 1G9
519-751-5544

The Willett, Paris

238 Grand River St. North
Paris, ON
N3L 2N7
519-442-2251

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STAFF LAB TESTING INFO