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Test Code 81107 JC Virus (JCV) Detection by In Situ Hybridization

Reporting Name

JC Virus by In Situ Hybridization

Useful For

Confirming a clinical and histopathologic diagnosis of progressive multifocal leukoencephalopathy (PML)

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type


Specimen Required

Supplies: Pathology Packaging Kit (T554)

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

Specimen Volume: Entire block


Specimen Type: Slides

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

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 Stability Information

Specimen Type Temperature Time
Tissue Ambient (preferred)

Day(s) and Time(s) Performed

Monday through Friday; 9 a.m.

Test Classification

This test uses a standard method. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information


88364-If additional probe stain, in situ

LOINC Code Information

Test ID Test Order Name Order LOINC Value
81107 JC Virus by In Situ Hybridization In Process


Result ID Test Result Name Result LOINC Value
18894 Accession Number 57723-9
18895 Referring Pathologist/Physician 46608-6
18896 Ref Path/Phys Address 74221-3
18897 Material: In Process
18969 Tissue: 31208-2
18898 Interpretation: 59464-8
18970 Comment: 48767-8
18899 SP Signing Pathologist: 19139-5
18900 *Previous Report Follows* No LOINC Needed
18901 Addendum: 35265-8
19222 Addendum Comment: 22638-1
18902 Addendum Pathologist: 19139-5

Method Name

In Situ Hybridization