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Test Code LCJC JC Virus, Molecular Detection, PCR, Spinal Fluid

Test Down Notes

Effective 8/21/2025:  this test is temporarily unavailable due to reagent issues.  The down time is expected to be <30 days.  Order JCPCR as an alternative. See test notification here


Specimen Required


Supplies: Sarstedt Aliquot Tube, 5mL (T914)

Container/Tube:

Preferred: Aliquot tube

Acceptable: Sterile screw cap vial

Specimen Volume: 0.5 mL

Collection Instructions: Do not centrifuge.


Useful For

Aiding in diagnosing progressive multifocal leukoencephalopathy due to JC virus

 

This test is not to be used as a diagnostic tool for Creutzfeldt-Jakob disease.

 

This test is not recommended for screening asymptomatic patients

Method Name

Real-Time Polymerase Chain Reaction (PCR)/DNA Probe Hybridization

Reporting Name

JC Virus PCR, CSF

Specimen Type

CSF

Specimen Minimum Volume

0.3 mL

Specimen Stability Information

Specimen Type Temperature Time
CSF Refrigerated (preferred) 7 days
  Frozen  7 days

Reject Due To

Heat-inactivated specimens Reject

Reference Values

Negative

Reference values apply to all ages.

Day(s) Performed

Monday through Saturday

Report Available

2 to 5 days

Performing Laboratory

Mayo Clinic Laboratories in Florida

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

87798

LOINC Code Information

Test ID Test Order Name Order LOINC Value
LCJC JC Virus PCR, CSF 33295-7

 

Result ID Test Result Name Result LOINC Value
88909 JC Virus PCR, CSF 33295-7

Testing Algorithm

For more information see Meningitis/Encephalitis Panel Algorithm