JC Virus Qualitative PCR, Tissue

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General Information

Lab Name
JC Virus Qualitative PCR, Tissue
Lab Code
JCVQLT
Epic Ordering
JC Virus Qualitative PCR, Tissue
Description

The detection of JC Virus (JCV) by real-time PCR amplification. The primers used in this PCR reaction amplify the Large T antigen gene. The JC Virus probes are labeled with reporter dye FAM and quencher TAMRA. Detection of JC Virus DNA (copies/mL) is achieved by amplifying standard curves consisting of serial dilutions of a known number of DNA containing the JC Virus amplicons. The minimum virus level that gives a positive result in 95% of replicates is 500 copies/mL (2.70 log copies/mL). Results are reported as “positive” or “not detected”.

This test was developed and its performance characteristics determined by the University of Washington Department of Laboratory Medicine and Pathology. It has not been cleared or approved by the US Food and Drug Administration.

For Blood, CSF, or Clear non-cellular fluid (e.g. BAL, or Washing), see JC Virus by PCR Quantitative [JCVQN].

For Urine, see JC Virus by PCR Quantitative, Urine [UJCVQN].

Synonyms
Components

Interpretation

Method

Real-time Polymerase Chain Reaction.

Reference Range
See individual components

Ordering & Collection

Specimen Type
Tissue Biopsy, Paraffin Tissue, Bone Marrow, Swab or Cellular fluid (e.g. BAL or Washing)
Collection

Tissue Biopsy: Pea size amount in sterile tube or universal transport media (UTM).

Paraffin Tissue: DO NOT SEND ENTIRE BLOCK and DO NOT SEND SLIDES. Slice 3-4 slices that are 5-50 micron thick in sterile tube.

Bone Marrow: 5 mL blood in EDTA (LAVENDER TOP) tube. No Heparin aspirate in syringe.

Swab: In sterile tube/universal transport media (UTM).

Cellular fluid: 1 mL in sterile tube

Unacceptable samples: Buffy coat collected with heparin syringe. Paraffin slides.

Minimum sample requirement: 0.5 mL

Handling Instructions

Bone Marrow: 5 mL bone marrow in EDTA (LAVENDER TOP) tube to Laboratory at room temperature within 24 hour of collection.

Note: Separate specimens MUST be submitted when both Viral Culture/Serology and PCR testing are ordered.

Quantity
requested: See Collection
minimum: 0.5 mL

Processing

Processing

Tissue Biopsy: Freeze at -10°C or colder and ship on dry ice. If freezer and/or dry ice is not available, ship immediately at 2-8°C (ice pack). Sample may be stored at 2-8°C (ice pack) for up to 48 hours of collection. Samples stored at 2-8°C greater than 48 hours old may be rejected. Do not freeze/thaw.

Paraffin Tissue: Ship at room temperature.

Bone Marrow: Ship at room temperature within 24 hours of collection.

Swabs: Freeze at -10°C or colder and ship on dry ice. If freezer and/or dry ice is not available, ship immediately at 2-8°C (ice pack). Sample may be stored at 2-8°C (ice pack) for up to 48 hours of collection. Samples stored at 2-8°C greater than 48 hours old may be rejected. Do not freeze/thaw.

Cellular fluid: Freeze at -10°C or colder and ship on dry ice. If freezer and/or dry ice is not available, ship immediately at 2-8°C (ice pack). Sample may be stored at 2-8°C (ice pack) for up to 48 hours of collection. Samples stored at 2-8°C greater than 48 hours old may be rejected. Do not freeze/thaw.

Outside Laboratory:

Buffy coat: Separate buffy coat from bone marrow within 24 hours of collection, Freeze at -10°C or colder.

Tissue/Cellular fluid/Swab: Ship samples on dry ice. If freezer and/or dry ice is not available, ship immediately at 2-8°C (ice pack). Shipment time must not exceed 48 hours from collection. Sample may be stored at 2-8°C (ice pack) for up to 48 hours of collection. Samples stored at 2-8°C greater than 48 hours old may be rejected. Do not freeze/thaw.

Performance

LIS Dept Code
Virology, Eastlake (EVIR)
Performing Location(s)
Other Virology, Molecular
206-685-6656

Virology Laboratory, Ste 320
1616 Eastlake Ave E.
Seattle, WA 98102
Frequency
Wednesday. Results following Tuesday.
Available STAT?
No

Billing & Coding

CPT codes
87798
LOINC
34586-8
Interfaced Order Code
UOW3767