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Parasites (other) – Toxocara – serology

Alternative Names/Synonyms	Serologic detection of antibodies against Toxocara (Toxocara canis, Toxocara cati, Larva migrans)
Laboratory	Microbiology
Sub-section	Serology
Specimen Type	○ Serum

Other Information

○ Both acute and convalescent sera are preferred (within 2-3 weeks of one another) as patients with early infection may have a weak IgG response.
○ Serology is the main laboratory diagnostic modality available for toxocariasis.

Specimen Requirements (Tube Type)

○ Serum separator tube (min volume 5 mL)

Collection Requirements

○ Decontaminate skin with 70% alcohol followed by iodine or chlorhexidine, collect at least 5 mL of blood

Sample Stability

Refer to section Sample Processing / Delivery

Referral Laboratory

PHOL

Routine Turnaround Time

○ Up to 10 days upon receipt at PHOL

Laboratory Contact Information

416-586-4800 extension 4432

Approval Required

Sample Processing / Delivery

○ Label specimen container. Place specimens in biohazard bag and seal.

○ Specimen should be stored and transported to the UHN/SH Microbiology Laboratory ASAP at refrigeration temperature (2-8˚C).

○ The specimen will be referred to the Public Health Ontario Laboratory for testing. PHOL will refer the specimen to NRCP.