Baylisascaris – Serology

Specimen Collection and Handling

Specimen Requirements

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

Baylisascaris antibodies1,2


1.0 ml

Vacutainer tubes (SST)

Submission and Collection Notes


Testing is performed for diagnosis of suspected infection only.


The following must be indicated on the General Test Requisition Form to proceed with testing:

  • symptoms 
  • onset date

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.


Haemolysed, icteric, lipemic or microbially contaminated sera or plasma are not recommended 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.

Special Instructions

Centrifuge if using SST. Place specimen in biohazard bag and seal.

Requisitions and Kit Ordering

Test Frequency and Turnaround Time (TAT)

Baylisascaris serology test 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.

Test Methods

Baylisascaris serology is performed by an in-house Immunoblot assay for the detection of antibodies to Baylisascaris.

Additional Information

Patient Clinical information is required for the sample to be processed for serology testing.

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Laboratory Services

Updated 20 July 2020