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Test Code Billings Clinic: 4489 Quest: 91665 JC Virus with IgG

Performing Laboratory

Quest Diagnostics Infectious Disease

Useful For

The JC Virus (JCV) is associated with progressive multifocal leukoencephalopathy (PML). Detection of antibodies to JCV in serum or plasma is a reliable indicator of exposure to JCV. The analytical performance characteristics were determined for multiple sclerosis patients.

Methodology

Immunoassay (IA)

Specimen Requirements

Specimen (send only one of the following):

 

Serum

  • Serum (Red-top) tube
  • Send 0.5 mL Serum

EDTA

  • Plasma from purple top
  • Send 0.5 ml EDTA Plasma

 

Processing and Transport:

  • Room Temperature
  • Send serum in a plastic transport tube

Storage/Stability

Specimen Type Temperature Time
Serum Refrigerated 14 days
  Frozen 90 days
  Ambient (preferred) 7 days

Reject Due To

Hemolysis

Reference Values

Negative
 

Index Interpretive criteria
<0.20 Negative
0.20-0.40 Indeterminate
>0.40 Positive

Day(s) Test Set Up

Set up: Monday - Friday

Report available: 2-14 days

Test Classification and CPT Coding

86711 - Antibody; JC (John Cunningham) virus (x2 if applicable)

 

If Index Value is between 0.19 and 0.41 (not inclusive), JC Virus Antibody Inhibition Assay will be performed at an additional charge.

 

LOINC Code Information

Reporting Name LOINC Code
JC Virus with IgG 70173-0