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TORCH Antibodies IgM

TORCH IGM

Ordering Recommendation

Not recommended for diagnosing congenital infections in newborns; tests should be selected individually to target the most likely infectious agents. 

New York DOH Approval Status

This test is New York state 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

Refer to individual components.

Remarks
Stability

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

Methodology

Semi-Quantitative Chemiluminescent Immunoassay (CLIA)

Performed

Sun-Sat

Reported

1-2 days

Reference Interval

Interpretive Data




Cytomegalovirus Antibody, IgM 29.9 AU/mL or less: Not Detected.
30.0-34.9 AU/mL: Indeterminate. Repeat testing in 10-14 days may be helpful.
35.0 AU/mL or greater: Detected. IgM antibody to CMV detected, which may indicate a current or recent infection. However, low levels of IgM antibodies may occasionally persist for more than 12 months post infection.
Rubella Antibody, IgM 19.9 AU/mL or less: Not Detected.
20.0 - 24.9 AU/mL: Indeterminate. Repeat testing in 10-14 days may be helpful.
25.0 AU/mL or greater: Detected. IgM antibody to rubella detected, which may indicate a current or recent infection or immunization.
Toxoplasma gondii Antibody, IgM 7.9 AU/mL or less: Not Detected.
8.0-9.9 AU/mL: Indeterminate. Repeat testing in 10-14 days may be helpful.
10.0 AU/mL or greater: Detected. Significant level of Toxoplasma gondii IgM antibody detected and may indicate a current or recent infection. However, low levels of IgM antibodies may occasionally persist for more than 12 months post infection.

Compliance Category

FDA

Note

This test should not be used for blood donor screening, associated reentry protocols, or for screening human cell, tissues, and cellular- and tissue-based products (HCT/P).

Hotline History

View Hotline History

 

Hotline History

Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
08/19/2024
X
N/A

CPT Codes

86645; 86762; 86778

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Components

Component Test Code* Component Chart Name LOINC
0050551 Rubella Antibody IgM 5335-5
0050553 CMV Antibody IgM 7853-5
0050557 Toxoplasma gondii Ab, IgM 8040-8
* 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

  • Cytomegalic Inclusion Disease (CMID)
  • Cytomegalovirus (CMV)
  • TORCH
  • TORCH IgM
  • TORCH Profile IgM
  • Toxoplasma gondii (T. gondii)
  • Toxoplasmosis
TORCH Antibodies IgM