Lab Test

Toxocara Antibody

Visceral Larva Migrans Antibody, Larva Migrans Antibody

Test Codes

Mayo: TOXOC, EPIC: LAB7131, Beaker: XTOX

Department

Send Outs

Specimen Collection Criteria

Collect (preferred specimen): One Gold-top SST tube.
Also acceptable: One plain Red-top tube.

Physician Office/Draw Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to a plastic transport tube and freeze (-20°C/-4°F or below).

Preparation for Courier Transport

Transport: 0.5 mL serum, frozen (-20°C/-4°F or below). (Minimum: 0.2 mL)

Rejection Criteria

Specimens not collected and processed as indicated.

In-Lab Processing

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to a plastic transport tube and freeze (-20°C/-4°F or below).

Transport: 0.5 mL serum, frozen (-20°C/-4°F or below). (Minimum: 0.2 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): unacceptable
Refrigerated (2-8°C or 36-46°F): 5 days
Frozen (-20°C/-4°F or below): 1 month

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Mayo Clinic Laboratories in Rochester, MN.

Performed

Tuesday, Thursday
Results available within 2-6 days.

Reference Range

By report.

Test Methodology

Semi-Quantitative Enzyme-Linked Immunosorbent Assay.

Clinical Utility

This assay aids in the serological diagnosis of toxocariasis. It screens serum for antibodies against Toxocara canisToxocara canis is a nonhuman ascarid nematode that undergoes limited development in humans. T. canis causes visceral larva migrans in humans. The larval form of T. canis occurs in human tissues (liver, eye, and central nervous system). Infection is acquired by ingesting eggs which are excreted in the feces of dogs or cats that are infected with adult worms.

CPT Codes

86682
LOINC:  40674-4

Contacts

Last Updated

7/15/2021

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