Microsporidia – Faeces/Bowel Aspirate

Consistent with O. Reg. 671/92 of the French Language Services Act, laboratory testing information on this page is only available in English because it is scientific or technical in nature and is for use only by qualified health care providers and not by members of the public.

Specimen Collection and Handling

Specimen Requirements

Test Requested Required Requisition(s) Specimen Type Minimum Volume Collection Kit

Ova and parasites1


As per Kit instructions

Parasitology Kit Order #390033

Ova and parasites1

Bowel aspirate

As per Kit instructions

Parasitology Kit Order #390033

Submission and Collection Notes


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.


Anti-diarrhoeal medication, radiological dyes (barium) and antibiotics interfere with the identification of intestinal protozoa as well as helminths and coccidians.

Storage and Transport

Label the specimen container with the patient’s full name, date of collection and one other unique identifier such as the patient’s date of birth or Health Card Number. Failure to provide this information may result in rejection or testing delay.

Place specimen container in a biohazard bag and seal. Reminder: Store the yellow capped container at room temperature at all times. The white capped container must be refrigerated before submission or frozen if there is a delay of more than 72 hours.

Special Instructions

Follow the instruction found in the updated Para Kit Instruction Sheet.

Collect faeces in clean dry container and immediately transfer a portion of the sample to the:

  • White Cap sterile container and then emulsify another portion in the 
  • SAF preservative in the Yellow top container (Mix 1 part faeces with 3 parts SAF or 1 part liquid faeces with 1 part SAF).

The submission of the white top container will allow for method development of newer and more sensitive methods such as polymerase chain reaction (PCR) to obtain improved species identification.

Requisitions and Kit Ordering

Test Frequency and Turnaround Time (TAT)

Microsporidia bowel  testing is performed Monday to Friday.

Turnaround time is up to 5 days from receipt by the PHO laboratory.

Test Methods

Specimens are examined by microscopy for spores.

Microsporidia are stained with a Modified Trichrome stain.

Microsporidia stain is performed on all reference specimens and on high risk immunocompromised patients.


Results are reported to the ordering physician or health care provider as indicated on the requisition.

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Updated 27 Jan 2021