ARUP's Laboratory Test Directory

TORCH Antibodies, IgG : 0050772

Mnemonic: TORCH IGG

Methodology: Chemiluminescent Immunoassay
Performed: Sun-Sat
Reported: Within 24 hours
Specimen Required: Collect: Serum separator tube. Also acceptable: Serum from umbilical cord blood.

Specimen Preparation: Allow specimen to clot completely at room temperature. Separate serum 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. 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
0050165Cytomegalovirus Antibody, IgG  
 
0.59 U/mL or less: Not Detected.
0.60-0.69 U/mL: Indeterminate - Repeat testing in 10-14 days maybe helpful.
0.70 U/mL or greater: Detected.
0050293Herpes Simplex Virus Type 1 and/or 2 Antibodies, IgG  
 
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.
0050771Rubella Antibody, IgG  
 
Less than 9 IU/mL: Not Detected.
9-9.9 IU/mL: Indeterminate - Repeat testing in 10-14 days may be helpful.
10 IU/mL or greater: Detected.
0050770Toxoplasma gondii Antibody, IgG  
 
5.9 IU/mL or less: Not Detected.
6.0-7.9 IU/mL: Indeterminate - Repeat testing in 10-14 days may be helpful.
8.0 IU/mL or greater: Detected.
 
CPT Code(s): 86644; 86694; 86317 x2