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HelpTest Code TOXCGSO Toxocara Antibody, IgG, Serum
Additional Codes
Mayo Test Code: TOXCG
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Useful For
Aiding in the diagnosis of Toxocara infection
Method Name
Enzyme-Linked Immunosorbent Assay (ELISA)
Reporting Name
Toxocara Ab, IgG, SSpecimen Type
SerumSpecimen Minimum Volume
0.4 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Frozen (preferred) | 30 days |
| Refrigerated | 5 days |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Heat-inactivated | Reject |
Reference Values
Negative
Reference values apply to all ages.
Cautions
A single negative result does not rule out infection. Assay sensitivity may be decreased depending on the site of infection, in cases of low parasitic burden, and timing of sample collection relative to exposure. In ocular toxocariasis, Toxocara antibody levels in serum can be low or absent despite clinical disease. Repeat testing should be considered in patients who are at high risk of exposure or infection.
False-negative results may occur in severely immunosuppressed patients.
Positive results should be interpreted with patient's clinical status and exposure history.
Positive results by this assay do not distinguish acute versus remote infection.
False-positive results may occur in patients with other helminth infections.
This assay uses synthetic antigens derived from Toxocara canis. Studies evaluating the sensitivity of this assay in patients infected with Toxocara cati have not been performed.
Day(s) Performed
Tuesday, Friday
Report Available
1 to 5 daysSpecimen Retention Time
14 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
86682
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| TOXCG | Toxocara Ab, IgG, S | 40674-4 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| TOXCG | Toxocara Ab, IgG, S | 40674-4 |
Forms
If not ordering electronically, complete, print, and send a Kidney Transplant Test Request with the specimen.