Test Code TRCHG ToRCH Profile IgG, Serum
Additional Codes
Internal: TRCHG
External: TORCHG
Beaker: LAB4088
Reporting Name
Torch Profile IgG, SUseful For
Determining immune status of individuals to the rubella virus following vaccination or prior exposure
Indicating 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
Profile Information
Test ID | Reporting Name | Available Separately | Always Performed |
---|---|---|---|
TOXGP | Toxoplasma Ab, IgG, S | Yes | Yes |
RBPG | Rubella Ab, IgG, S | Yes | Yes |
CMVG | Cytomegalovirus Ab, IgG, S | Yes | Yes |
HS1G | HSV Type 1 Ab, IgG, S | No | Yes |
HS2G | HSV Type 2 Ab, IgG, S | No | Yes |
Performing Laboratory
Mayo Clinic Laboratories in RochesterSpecimen Type
SerumOrdering Guidance
To evaluate recent or acute infection with Toxoplasma gondii, order TXM / Toxoplasma gondii Antibody, IgM, Serum.
For patients presenting with presumed acute infection with herpes simplex virus, order HERPB / Herpes Simplex Virus 1 and 2, Qualitative PCR, Blood.
IgG antibodies in patients younger than 6 months of age are typically the result of passive transfer from the mother. To assess possible infection in patients younger than 6 months, consider ordering IgM testing.
Specimen Required
Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 2 mL
Collection Instructions: Centrifuge and aliquot serum into plastic vial.
Specimen Minimum Volume
1.2 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Serum | Refrigerated (preferred) | 14 days | |
Frozen | 14 days |
Reference Values
Toxoplasma ANTIBODY, IgG
Negative
Toxoplasma IgG
≤9 IU/mL (Negative)
10-11 IU/mL (Equivocal)
≥12 IU/mL (Positive)
RUBELLA ANTIBODY, IgG
Vaccinated: Positive (≥1.0 AI)
Unvaccinated: Negative (≤0.7 AI)
CYTOMEGALOVIRUS
Negative
HERPES SIMPLEX VIRUS (HSV), TYPE 1 AND TYPE 2 ANTIBODIES, IgG
Herpes Simplex Virus (HSV) Type 1, IgG
Negative
Herpes Simplex Virus (HSV) Type 2, IgG
Negative
Day(s) Performed
Monday through Saturday
CPT Code Information
86644-CMV
86695-Herpes simplex, type 1
86696-Herpes simplex, type 2
86762-Rubella
86777-Toxoplasma
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
TRCHG | Torch Profile IgG, S | 102088-2 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
HS1G | HSV Type 1 Ab, IgG, S | 51916-5 |
HS2G | HSV Type 2 Ab, IgG, S | 43180-9 |
RBG | Rubella Ab, IgG, S | 40667-8 |
CMVG | Cytomegalovirus Ab, IgG, S | 13949-3 |
TOXG | Toxoplasma Ab, IgG, S | 40677-7 |
DEXG6 | Toxoplasma IgG Value | 8039-0 |
DEXG2 | Rubella IgG Antibody Index | 5334-8 |
Report Available
Same day/1 to 3 daysReject Due To
Gross hemolysis | Reject |
Gross lipemia | Reject |
Gross icterus | Reject |
Heat-inactivated specimen | Reject |
Method Name
Multiplex Flow Immunoassay (MFI)
Secondary ID
61859Forms
If not ordering electronically, complete, print, and send Infectious Disease Serology Test Request (T916) with the specimen.