Filaria – Microscopy

Specimen Collection and Handling

Specimen Requirements

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

Filaria

Unstained blood slides3

N/A

Slide mailer for unstained slides

Filaria

EDTA blood

2.0 ml

EDTA blood tube

Submission and Collection Notes

1

Please note on the requisition (under other) if the patient has fever, intravascular hemolysis, hemoglobinuria, renal failure or is immunocompromised.

2

Indicate Country/Region and if the patient is a new immigrant or refugee or returned traveler under ‘Travel’ section of the requisition.

3

Submit unstained thick and thin slides AND EDTA blood. EDTA blood is required for Knott’s Concentration Procedure.

Preparation Prior to 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. 

Special Instructions

Place slide mailer in a biohazard bag and seal. Ship to the PHO laboratory as soon as possible.

Requisitions and Kit Ordering

Test Frequency and Turnaround Time (TAT)

Filaria testing is performed Monday to Friday.

Turnaround time is up to 2 days after receipt by PHO laboratory.

Reporting

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

Test Methods

EDTA blood samples are examined for microfilaria using microscopy using the Knott’s Concentration Procedure.

Thick and thin smears are stained with Giemsa and examined by microscopy.

contact lab

Contact Laboratory Customer Service

Laboratory Services

customerservicecentre@oahpp.ca

Updated 22 Oct 2019