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HelpTest Code Lab9675 Toxocara canis Antibody, Serum
Performing Laboratory
Centers for Disease Control
Methodology
Enzyme-Linked Immunosorbent Assay (ELISA)
Specimen Requirements
Specimen Type: Serum
Container/Tube: Plain red top
Specimen Volume: Full tube
Specimen Minimum Volume: 2.5 mL
Forms: Centers for Disease Patient History Form in Special Instructions.
Day(s) Test Set Up
Varies
Turnaround Time:
STAT: not available
Routine: approximately 4 weeks
Test Classification and CPT Coding
Not applicable
Reference Values
A positive test (≥1:32) is indicative of infection at some time with Toxocara species. Approximately 75% of patients with clinically diagnosed visceral or ocular larva migrans have titers of Toxocara canis of ≥1:32. Specificity at titers of ≥1:32 have been found in the serum of 10% of apparently normal persons. Antibody reactions of <1:32 are reported because of their possible value in assessing ocular infections but must be interpreted with caution because of increased numbers of false-positive reactions.
Specimen Transport Temperature
Ambient
Additional Information
For BJH Laboratory Use Only
Laboratory Processing Instructions:
BJH Core Lab will forward to the performing laboratory. Centrifuge specimen. Transfer an aliquot of serum into plastic vial. Send in round mailers via courier to SLCH laboratory where they will be picked up by the Missouri State Public Health Laboratory.