Torch Panel

Overview

  • EPIC Code:
  • IMO436
  • Soft Test Code:
  • TRCH3
Included Tests

Cytomegalovirus IgM; Herpes Select 1,2  IgG Antibodies; Rubella Screen IgM; Toxoplasmosis IgM


Specimen Collection & Preparation

Specimen Requirements:

-OR-

3.0 mL Serum in a SST Gold Top Tube
Minimum Volume:
1.0 mL Serum*

* This volume does not allow for repeat testing

Rejection Criteria:

Gross hemolysis

Grossly lipemic 

Plasma specimens


Transport and Storage:
  • Refrigerated: 48 Hours

    Specimen to be transported Refrigerated to PRMC within 48 hours of collection. 

  • Frozen (-20 C or colder): 30 Days

    Will be frozen by Immunology department to maintain specimen integrity until testing occurs.

    Do not use frost free units that undergo repeated freeze/thaw cycles.

    Do not transport Frozen.

Clinical Interpretation

Reference Range:

Cytomegalovirus, IgM
OD ratio < .90 indicates no detectable Cytomegalovirus, IgM antibody.
 
OD ratio 0.91 - 1.09 are equivocal for Cytomegalovirus, IgM antibody. Suggest a new specimen be collected and retested.
OD ratio > 1.10 is positive for Cytomegalovirus, IgM antibody. A positive value indicates a primary or reactivated infection.
Rubella, IgM
OD ratio < .90 indicates no detectable Rubella, IgM antibody.
 
OD ratio 0.91 - 1.09 are equivocal for Rubella, IgM antibody. Suggest a new specimen be collected and re-tested.
 
OD ratio > 1.10 is positive for Rubella, IgM antibody. A positive value indicates a primary or reactivated infection.
Toxoplasmosis, IgM
OD ratio < .90 indicates no detectable Toxoplasmosis, IgM antibody.
 
OD ratio 0.91 - 1.09 are equivocal for Toxoplasmosis, IgM antibody. Suggest a new specimen be collected and re-tested.
 
OD ratio > 1.10 is positive for Toxoplasmosis, IgM antibody. A positive value indicates a primary or reactivated infection.
Herpes Select 1 and 2  IgG Antibodies
OD ratio < 0.90 indicates no detectable HSV IgG antibody. Indicates no current or previous infection with HSV-1 or HSV-2.
 
OD ratio 0.91 to 1.09 is equivocal HSV IgG antibody. Suggest a new specimen be collected and retested.
 
OD ratio > 1.10 is positive for IgG antibody to HSV. It indicates a current or previous infection with HSV-1 or HSV-2 or both.


Methodology:
  • Enzyme Immunoassay (EIA)

Production Schedule

Sites Performed
  • Parkview Regional Medical Center
Days Performed
Thursday
Departments
  • Immunology

Coding & Compliance

CDM

01450697, 01451069, 01456695, 01456696, 01456762


CPT Coding

86645, 86695, 86696, 86762, 86778