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# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Stratify JCV ™ Ab (w/Index) w/Rflx to Inhibition Assay (91665)
Test Code: STJCVSO
Synonyms/Keywords
Stratify JCV Antibody & Reflex Inhibition (91665)
Test Components
Index Value
JCV Antibody
Useful For
The JC Virus (JCV) is associated with progressive multifocal leukoencephalopathy (PML). Detection of antibodies to JCV in serum OR plasma is a reliable indicator of exposure to JCV. The analytical performance characteristics were determined for multiple sclerosis patients.
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
​Serum ​Red Top Tube (RTT) ​Serum Separator Tube (SST) ​0.5 mL ​0.25 mL
​        OR ​ ​ ​ ​ ​
​Plasma ​EDTA Lavender Top Tube (LTT) ​0.5 mL ​0.25 mL
Specimen Stability Information
Specimen Type Temperature Time
​Serum ​ ​ ​Refrigerate ​14 days
​Ambient ​7 days
​Frozen ​3 months
​Plasma ​ ​ ​Refrigerate ​14 days
​Ambient ​7 days
​Frozen ​3 months
Rejection Criteria
Hemolysis
​Lipemia
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
​Quest Diagnostics who forward to Focus Laboratories ​Tuesday through Saturday ​1 day (same day) ​Inhibition Assay
Reference Range Information
<0.20 – Negative
0.20 – 0.40 – Indeterminate
>0.40 – Positive
Interpretation
If the Index Value is between 0.19 and 0.41 (not inclusive), then JC Virus Antibody Inhibition Assay (test code 90259) [Focus 34340]) will be performed.
Synonyms/Keywords
Stratify JCV Antibody & Reflex Inhibition (91665)
Test Components
Index Value
JCV Antibody
Ordering Applications
Ordering Application Description
​COM Stratify JCV Antibody & Reflex Inhibition (91655)
​Centricity Stratify JCV Antibody & Reflex Inhibition (91655)
​Cerner Stratify JCV Antibody & Reflex Inhibition (91655)
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
​Serum ​Red Top Tube (RTT) ​Serum Separator Tube (SST) ​0.5 mL ​0.25 mL
​        OR ​ ​ ​ ​ ​
​Plasma ​EDTA Lavender Top Tube (LTT) ​0.5 mL ​0.25 mL
Specimen Stability Information
Specimen Type Temperature Time
​Serum ​ ​ ​Refrigerate ​14 days
​Ambient ​7 days
​Frozen ​3 months
​Plasma ​ ​ ​Refrigerate ​14 days
​Ambient ​7 days
​Frozen ​3 months
Rejection Criteria
Hemolysis
​Lipemia
Useful For
The JC Virus (JCV) is associated with progressive multifocal leukoencephalopathy (PML). Detection of antibodies to JCV in serum OR plasma is a reliable indicator of exposure to JCV. The analytical performance characteristics were determined for multiple sclerosis patients.
Reference Range Information
<0.20 – Negative
0.20 – 0.40 – Indeterminate
>0.40 – Positive
Interpretation
If the Index Value is between 0.19 and 0.41 (not inclusive), then JC Virus Antibody Inhibition Assay (test code 90259) [Focus 34340]) will be performed.
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
​Quest Diagnostics who forward to Focus Laboratories ​Tuesday through Saturday ​1 day (same day) ​Inhibition Assay
For billing questions, see Contacts
For most current information refer to the Marshfield Laboratory online reference manual.