Filaria – Serology
|Test Requested||Required Requisition(s)||Specimen Type||Minimum Volume||Collection Kit|
Filaria serology, or Filariasis, Wuchereriasis, or Onchocerciasis, Bancroft’s Filaria, or Brugiasis
Blood or serum
5.0 ml blood or 1.0 ml serum
Blood, clotted - vacutainer tubes (SST)
Submission and Collection Notes
This test detect antibodies to Filaria. For diagnosis of an infection, thick and thin smears, and EDTA blood for Filaria microscopy is recommended. Refer to the test information sheet for Filaria – microscopy
If diagnostic testing is required using serology include all clinical symptoms and date of onset on the General Test Requisition Form.
Timing of Specimen Collection
An acute (collected early after the onset of symptoms) and a convalescent (collected 2-3 weeks later) may be required for laboratory diagnosis.
Grossly haemolysed, lipemic, contaminated specimens, CSF and specimens containing anti-coagulant are unsuitable for testing.
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.
Centrifuge if using SST. Place specimen in biohazard bag and seal.
Test Frequency and Turnaround Time (TAT)
Filaria serology is a Referred Out Test. Samples are sent to the National Reference Centre for Parasitology (NRCP) in Montreal.
Turnaround time is up to 42 days from receipt by PHO Laboratory.
Results are reported to the ordering physician or health care provider as indicated on the requisition.
Filaria serology is performed using Enzyme Immunoassay (EIA) methodology.