ARUP's Laboratory Test Directory

TORCH Antibodies, IgM : 0050665

Mnemonic: TORCH M

Methodology: Semi-Quantitative Chemiluminescent Immunoassay/Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Performed: Sun-Sat
Reported: 1-2 days
Specimen Required: Collect: Serum separator tube.

Specimen Preparation: 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. Mark specimens plainly as "acute" or "convalescent."

Storage/Transport Temperature: Refrigerated.

Unacceptable Conditions: Refer to individual components.

Stability (collection to initiation of testing): 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
0050553Cytomegalovirus 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.
0050641Herpes Simplex Virus Type 1 and/or 2 Antibodies, IgM by ELISA  
 
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 - IgM antibody to HSV 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.
0050551Rubella 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.
0050557Toxoplasma 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.
 
Interpretive Data: Refer to report.
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).
CPT Code(s): 86645; 86694; 86762; 86778