Test Catalog

Test Id : JCV

JC Virus Detection by In Situ Hybridization

Useful For
Suggests clinical disorders or settings where the test may be helpful

Confirming a clinical and histopathologic diagnosis of progressive multifocal leukoencephalopathy

Method Name
A short description of the method used to perform the test

In Situ Hybridization (ISH)

NY State Available
Indicates the status of NY State approval and if the test is orderable for NY State clients.

Yes

Reporting Name
Lists a shorter or abbreviated version of the Published Name for a test

JC Virus ISH

Aliases
Lists additional common names for a test, as an aid in searching

JCV

JC Virus In Situ Hybridization

John Cunningham Virus (JCV)

GPJCVISH

ISJCVIISH

ISNEGJCVISH

ISDNAJCVISH

PML Virus (Progressive Multi-Focal Leukoencephalopathy)

Specimen Type
Describes the specimen type validated for testing

Special

Shipping Instructions

Attach the green pathology address label included in the kit to the outside of the transport container.

Necessary Information

A pathology/diagnostic report and a brief history are required.

Specimen Required
Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Specimen Type: Formalin-fixed, paraffin-embedded tissue block

Supplies: Pathology Packaging Kit (T554)

Specimen Volume: Entire block

 

Specimen Type: Slides

Slides: 4 Unstained glass, positively-charged slides with 5 (+ or - 1)-microns formalin-fixed, paraffin-embedded tissue

Forms

If not ordering electronically, complete, print, and send an Immunohistochemical (IHC)/In Situ Hybridization (ISH) Stains Request (T763) with the specimen.

Reject Due To
Identifies specimen types and conditions that may cause the specimen to be rejected

Wet/frozen tissue
Cytology smears
Nonformalin fixed tissue
Nonparaffin embedded tissue
Noncharged slides
ProbeOn slides
Reject

Specimen Stability Information
Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen Type Temperature Time Special Container
Special Ambient (preferred)
Refrigerated

Useful For
Suggests clinical disorders or settings where the test may be helpful

Confirming a clinical and histopathologic diagnosis of progressive multifocal leukoencephalopathy

Clinical Information
Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test

JC virus is the etiologic agent of progressive multifocal leukoencephalopathy (PML), a rare, demyelinating, fatal disorder of the central nervous system that occurs on a background of immune deficiency. PML is an infrequent complication of a wide variety of conditions, including lymphoproliferative disorders (Hodgkin disease, chronic lymphocytic leukemia), sarcoidosis, tuberculosis, and AIDS.

Interpretation
Provides information to assist in interpretation of the test results

This test, when not accompanied by a pathology consultation request, will be answered as either positive or negative. If additional interpretation or analysis is needed, request PATHC / Pathology Consultation along with this test.

Cautions
Discusses conditions that may cause diagnostic confusion, including improper specimen collection and handling, inappropriate test selection, and interfering substances

Studies have shown potential cross reactivity between polyoma (BK) and JC virus in situ hybridization (ISH) testing.(1)

 

Age of a cut paraffin section can affect staining quality. Stability thresholds vary widely among published literature. Best practice is for paraffin sections to be cut within 6 weeks.

Clinical Reference
Recommendations for in-depth reading of a clinical nature

1. Fritzsche FR, Pianca S, Gaspert A, et al: Silver-enhanced in situ hybridization for detection of polyomavirus DNA in patients with BK virus nephropathy. Diagn Mol Pathol. 2011 Jun;20(2):105-110

2. Aksamit AJ, Mourrain P, Sever JL, Major EO: Progressive multifocal leukoencephalopathy: investigation of 3 cases using in situ hybridization with JC virus biotinylated DNA probe. Ann Neurol. 1985 Oct;18(4):490-496

3. Aksamit AJ: Nonradioactive in situ hybridization in progressive multifocal leukoencephalopathy. Mayo Clin Proc. 1993 Sept;68(9):899-910

4. Muaoz-Marmol AM, Mola G, Fernandez-Vasalo A, et al: JC virus early protein detection by immunohistochemistry in progressive multifocal leukoencephalopathy: a comparative study with in situ hybridization and polymerase chain reaction. J Neuropathol Exp Neurol. 2004 Nov;63(11):1124-1130

5. Vago L, Cinque P, Sala E, et al: JCV-DNA and BKV-DNA in the CNS tissue and CSF of AIDS patients and normal subjects. Study of 41 cases and review of the literature. J Acquir Immune Defic Syndr Hum Retrovirol. 1996 Jun 1;12(2):139-146

6. Chen H, Chen XZ, Waterboer T, et al: Viral infections and colorectal cancer: a systematic review of epidemiological studies. Int J Cancer. 2015 Jul 1:137(1)12-24

Method Description
Describes how the test is performed and provides a method-specific reference

In situ hybridization on sections of paraffin-embedded tissue.(Unpublished Mayo method)

PDF Report
Indicates whether the report includes an additional document with charts, images or other enriched information

No

Day(s) Performed
Outlines the days the test is performed. This field reflects the day that the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time before the test is performed. Some tests are listed as continuously performed, which means that assays are performed multiple times during the day.

Monday through Friday

Report Available
The interval of time (receipt of sample at Mayo Clinic Laboratories to results available) taking into account standard setup days and weekends. The first day is the time that it typically takes for a result to be available. The last day is the time it might take, accounting for any necessary repeated testing.

5 to 7 days

Specimen Retention Time
Outlines the length of time after testing that a specimen is kept in the laboratory before it is discarded

Until staining is complete.

Performing Laboratory Location
Indicates the location of the laboratory that performs the test

Rochester

Fees
Several factors determine the fee charged to perform a test. Contact your U.S. or International Regional Manager for information about establishing a fee schedule or to learn more about resources to optimize test selection.

  • Authorized users can sign in to Test Prices for detailed fee information.
  • Clients without access to Test Prices can contact Customer Service 24 hours a day, seven days a week.
  • Prospective clients should contact their Regional Manager. For assistance, contact Customer Service.

Test Classification
Provides information regarding the medical device classification for laboratory test kits and reagents. Tests may be classified as cleared or approved by the US Food and Drug Administration (FDA) and used per manufacturer instructions, or as products that do not undergo full FDA review and approval, and are then labeled as an Analyte Specific Reagent (ASR) product.

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
Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Clinic Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.

CPT codes are provided by the performing laboratory.

88365-Primary

88364-If additional ISH

LOINC® Information
Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the order and results codes of this test. LOINC values are provided by the performing laboratory.

Test Id Test Order Name Order LOINC Value
JCV JC Virus ISH In Process
Result Id Test Result Name Result LOINC Value
Applies only to results expressed in units of measure originally reported by the performing laboratory. These values do not apply to results that are converted to other units of measure.
71214 Interpretation 50595-8
71215 Participated in the Interpretation No LOINC Needed
71216 Report electronically signed by 19139-5
71218 Material Received 81178-6
71596 Disclaimer 62364-5
72115 Case Number 80398-1

Test Setup Resources

Setup Files
Test setup information contains test file definition details to support order and result interfacing between Mayo Clinic Laboratories and your Laboratory Information System.

Excel | Pdf

Sample Reports
Normal and Abnormal sample reports are provided as references for report appearance.

Normal Reports | Abnormal Reports

SI Sample Reports
International System (SI) of Unit reports are provided for a limited number of tests. These reports are intended for international account use and are only available through MayoLINK accounts that have been defined to receive them.

SI Normal Reports | SI Abnormal Reports