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HelpTest Code JCPD John Cunningham (JC) Virus DNA PCR
Specimen Requirements
Preferred:
Specimen Type: Cerebrospinal Fluid (CSF)
Container/Tube: Sterile Plain Container
Specimen Volume: Entire collection
Acceptable:
Specimen Type: Whole Blood
Container/Tube: Lavender Top (EDTA)
Specimen Volume: 3.0 mL
Specimen Stability
| Cerebrospinal Fluid (CSF) | 72 hours, refrigerated |
|---|---|
| Whole Blood | 7 days, ambient or refrigerated |
Specimen Condition
| Whole Blood: Frozen or hemolysis | Reject |
|---|
Methodology
Real-time Polymerase Chain Reaction
Days and Times Performed
TAT 7 - 9 days
Reference Interval
Non-detectable titre < 100 viral copies/mL
Testing Laboratory
National University Hospital
Molecular Diagnosis Centre, 67724384
Useful For
To aid in diagnosing progressive multifocal leukoncephalopathy due to John Cunningham (JC) virus
Service Code
LBC07240
1033028
Update
Last updated 17/03/2026
LOINC Code Information
42921-7
Laboratory Code
LAB3040488
Test Info
(a) This test was developed by NUH Laboratory Medicine.
(b) This laboratory test has undergone in-house evaluation with appropriate quality assurance and control measures in line with laboratory best practice and accreditation requirements.