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

Specimen Required

Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Preferred: 12 x 75-mm screw cap vial

Acceptable: Sterile screw cap vial

Container/Tube: Sterile vial

Specimen Volume: 0.5 mL

Collection Instructions: Do not centrifuge.

Secondary ID


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

Testing Algorithm

For more information see Meningitis/Encephalitis Panel Algorithm.

Method Name

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

Reporting Name

JC Virus, PCR, CSF

Specimen Type


Specimen Minimum Volume

0.3 mL

Specimen Stability Information

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

Reject Due To

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Reference Values


Day(s) Performed

Monday through Friday

Report Available

Same day/ 1 to 4 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

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

CPT Code Information


LOINC Code Information

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


Result ID Test Result Name Result LOINC Value
618305 JC Virus, PCR, CSF 33295-7


If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.