TORCH Antibodies, IgG
Also known as: TORCH IGG
Use
The TORCH Antibodies, IgG test is used primarily for assessing past exposure or immunization to Toxoplasma, Rubella, CMV, and HSV in pregnant women. Although not recommended for diagnosing congenital infections in newborns, the test evaluates specific antibodies to help determine if there has been past infection or vaccination.
Special Instructions
This test is not intended for diagnosing active infections and should not be used for blood donor screening, associated re-entry protocols, or for screening human cell, tissues, and cellular- and tissue-based products (HCT/P). If indeterminate results are obtained, repeat testing in 10-14 days is recommended. Parallel testing is preferred with convalescent specimens required within 30 days from the acute specimen's receipt.
Limitations
The test has limitations in terms of reliability for immunocompromised patients where serology (IgG or IgM antibody titers) may not accurately indicate acute or reactivation CMV disease. Furthermore, the magnitude of the measured antibody result is not indicative of the amount of antibody present. It is important that both tests be performed in the same laboratory for consistent results.
FDA ApprovedNew York Approved
Methodology
Immunoassay (CLIA)
Biomarkers
LOINC Codes
- 5124-3
- 27948-9
- 8039-0
- 8014-3
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
2 mL
Minimum Volume
1 mL
Container
ARUP standard transport tube
Collection Instructions
Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection.
Storage Instructions
Refrigerated.
Causes for Rejection
Refer to individual components.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 48 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 year |