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Test Code TORCG ToRCH Profile IgG, Serum

Important Note

The performance of this test has not been established for use in neonates, immunosuppressed, or organ transplant individuals.

Additional Codes

ALAB: TORCG
Powerchart: TORCH Screen IgG
MA Cerner: Torch Profile IgG

Test Method

Multiplex Flow Immunoassay; BioRad BioPlex

Specimen Requirement

Serum, EDTA or heparinized plasma are also acceptable. Gel tubes are acceptable.

Additional Specimen Collection Information

Collect blood in a serum or plasma gel tube (EDTA or heparin).

  • Minimum volume: 500 mcL
  • Hemolysis: > 2+ not acceptable
  • Lipemia > 3+ must be ultracentrifuged
  • Icterus: no significant interference noted
  • Storage: specimen is stable for up to 7 days refrigerated; freeze at ≤-20oC for long term storage.
    Thoroughly mix thawed specimens; it is also recommended to centrifuge thawed specimens to remove gross particulate matter. Avoid multiple freeze-thaw cycles (up to 3 cycles are acceptable).

Performance

Testing is performed Monday through Sunday.
Routine: Typically completed within 4 hours after the specimen arrives at the testing site.

Reference Values

  • Cytomegalovirus (CMV) Antibody IgG, Serum: Negative
  • Herpes Simplex Virrus (HSV) Antibody Type 1: Negative
  • Herpes Simplex Virus (HSV) Antibody Type 2: Negative
  • Rubella Antibody, IgG, Serum: Positive ((≥10 AIU/mL)
    Positive: The presence of antibody suggests immunization or past or current infection.
  • Toxoplasma gondii Antibody, IgG, Serum: Negative (≤9 IU/mL)

CPT Code Information

86644 Antibody; Cytomegalovirus (CMV)
86695   Qualitative or semi-qualitative immunoassays performed by multiple-step methods for detection of Herpes simplex type 1
86696   Qualitative or semi-qualitative immunoassays performed by multiple-step methods for detection of Herpes simplex type 2

86777 Antibody; Toxoplasma

86762 Rubella, IgG

 

Useful For

  • Determination of immune status of individuals to the rubella virus following vaccination or prior exposure
  • As an indication of past or recent infection with Toxoplasma gondii, cytomegalovirus, or herpes simplex virus (HSV)
  • Distinguishing between infection caused by HSV types 1 and 2, especially in patients with subclinical or unrecognized HSV infection

LOINC Code Information

13949-3 Cytomegalovirus IgG Ab [Presence] in Serum by Immunoassay
27948-9  Herpes simplex virus 1+2 IgG Ab [Units/volume] in Serum by Immunoassay86762 Antibody; Rubella, IgG
40667-8 Rubella virus IgG Ab [Presence] in Serum by Immunoassay
12261-4 Toxoplasma gondii IgG Ab [Presence] in Serum by Immunoassay

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