Ordering Recommendation

Not recommended for diagnosing congenital infections in newborns; tests should be selected individually to target the most likely infectious agents. May be used in pregnant women to assess past exposure or immunization to Toxoplasma, Rubella, CMV, and HSV.

Mnemonic
TORCH IGG
Methodology

Semi-Quantitative Chemiluminescent Immunoassay

Performed

Sun-Sat

Reported

Within 24 hours

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

Serum Separator Tube (SST).

Specimen Preparation

Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Transfer 2 mL serum to an ARUP Standard Transport Tube. (Min: 1 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens.

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions
Remarks

Mark specimens plainly as "acute" or "convalescent."

Stability

After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)

Reference Interval
Test Number
Components
Reference Interval
0050165 Cytomegalovirus Antibody, IgG
0.59 U/mL or less: Not Detected.
0.60-0.69 U/mL: Indeterminate - Repeat testing in 10-14 days may be helpful.
0.70 U/mL or greater: Detected.

0050293 Herpes Simplex Virus Type 1 and/or 2 Antibodies, IgG
0.89 IV or less: Not Detected.
0.90-1.09 IV: Indeterminate - Repeat testing in 10-14 days may be helpful.
1.10 IV or greater: Detected.

0050771 Rubella Antibody, IgG
Less than 9 IU/mL: Not Detected.
9-9.9 IU/mL: Indeterminate - Repeat testing in 10-14 days may be helpful.
10 IU/mL or greater: Detected.

0050770 Toxoplasma gondii Antibody, IgG Effective March 3, 2014
7.1 IU/mL or less: Not Detected.
7.2-8.7 IU/mL: Indeterminate - Repeat testing in 10-14 days may be helpful.
8.8 IU/mL or greater: Detected.


Interpretive Data

Refer to report.

No compliance statements are in use for this test.

Note

This test 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).

Hotline History
N/A
CPT Codes

86644; 86694; 86762; 86777

Components
Component Test Code* Component Chart Name LOINC
0050165 CMV Antibody IgG 5124-3
0050286 HSV Type 1/2 Combined Ab, IgG 27948-9
0050770 Toxoplasma gondii Ab, IgG 8039-0
0050771 Rubella Antibody IgG 8014-3
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • CMV Antibody IgG, HSV Type 1/2 Combined Ab, IgG
  • Rubella Antibody IgG
  • Torch panel
  • Toxoplasma gondii Ab, IgG
TORCH Antibodies, IgG